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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% SSSSS H H EEEEE AAA RRRR %
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% SS H H E A A R R %
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% SSS HHHHH EEE AAAAA RRRR %
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% SS H H E A A R R %
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% SSSSS H H EEEEE A A R R %
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% %
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% %
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% MagickCore Methods to Shear or Rotate an Image by an Arbitrary Angle %
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% %
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% Software Design %
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% Cristy %
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% July 1992 %
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% %
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% %
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% Copyright 1999-2021 ImageMagick Studio LLC, a non-profit organization %
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% dedicated to making software imaging solutions freely available. %
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% %
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% You may not use this file except in compliance with the License. You may %
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% obtain a copy of the License at %
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% %
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% https://imagemagick.org/script/license.php %
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% %
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% Unless required by applicable law or agreed to in writing, software %
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% distributed under the License is distributed on an "AS IS" BASIS, %
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% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
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% See the License for the specific language governing permissions and %
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% limitations under the License. %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% The XShearImage() and YShearImage() methods are based on the paper "A Fast
|
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% Algorithm for General Raster Rotation" by Alan W. Paeth, Graphics
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% Interface '86 (Vancouver). ShearRotateImage() is adapted from a similar
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% method based on the Paeth paper written by Michael Halle of the Spatial
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% Imaging Group, MIT Media Lab.
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%
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*/
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/*
|
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Include declarations.
|
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*/
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#include "MagickCore/studio.h"
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#include "MagickCore/artifact.h"
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#include "MagickCore/attribute.h"
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#include "MagickCore/blob-private.h"
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#include "MagickCore/cache-private.h"
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#include "MagickCore/channel.h"
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#include "MagickCore/color-private.h"
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#include "MagickCore/colorspace-private.h"
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#include "MagickCore/composite.h"
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|
#include "MagickCore/composite-private.h"
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|
#include "MagickCore/decorate.h"
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#include "MagickCore/distort.h"
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#include "MagickCore/draw.h"
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|
#include "MagickCore/exception.h"
|
|
|
#include "MagickCore/exception-private.h"
|
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#include "MagickCore/gem.h"
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#include "MagickCore/geometry.h"
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#include "MagickCore/image.h"
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#include "MagickCore/image-private.h"
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#include "MagickCore/matrix.h"
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|
#include "MagickCore/memory_.h"
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|
|
#include "MagickCore/list.h"
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|
#include "MagickCore/monitor.h"
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|
#include "MagickCore/monitor-private.h"
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#include "MagickCore/nt-base-private.h"
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|
#include "MagickCore/pixel-accessor.h"
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#include "MagickCore/quantum.h"
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#include "MagickCore/resource_.h"
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#include "MagickCore/shear.h"
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#include "MagickCore/statistic.h"
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#include "MagickCore/string_.h"
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|
#include "MagickCore/string-private.h"
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|
#include "MagickCore/thread-private.h"
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|
#include "MagickCore/threshold.h"
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#include "MagickCore/transform.h"
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|
|
|
/*
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
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|
% %
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|
% %
|
|
|
% %
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|
|
+ C r o p T o F i t I m a g e %
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|
% %
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|
% %
|
|
|
% %
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
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|
%
|
|
|
% CropToFitImage() crops the sheared image as determined by the bounding box
|
|
|
% as defined by width and height and shearing angles.
|
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|
%
|
|
|
% The format of the CropToFitImage method is:
|
|
|
%
|
|
|
% MagickBooleanType CropToFitImage(Image **image,
|
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|
% const double x_shear,const double x_shear,
|
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|
% const double width,const double height,
|
|
|
% const MagickBooleanType rotate,ExceptionInfo *exception)
|
|
|
%
|
|
|
% A description of each parameter follows.
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|
%
|
|
|
% o image: the image.
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|
%
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|
|
% o x_shear, y_shear, width, height: Defines a region of the image to crop.
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|
%
|
|
|
% o exception: return any errors or warnings in this structure.
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|
%
|
|
|
*/
|
|
|
static MagickBooleanType CropToFitImage(Image **image,
|
|
|
const double x_shear,const double y_shear,
|
|
|
const double width,const double height,
|
|
|
const MagickBooleanType rotate,ExceptionInfo *exception)
|
|
|
{
|
|
|
Image
|
|
|
*crop_image;
|
|
|
|
|
|
PointInfo
|
|
|
extent[4],
|
|
|
min,
|
|
|
max;
|
|
|
|
|
|
RectangleInfo
|
|
|
geometry,
|
|
|
page;
|
|
|
|
|
|
ssize_t
|
|
|
i;
|
|
|
|
|
|
/*
|
|
|
Calculate the rotated image size.
|
|
|
*/
|
|
|
extent[0].x=(double) (-width/2.0);
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|
|
extent[0].y=(double) (-height/2.0);
|
|
|
extent[1].x=(double) width/2.0;
|
|
|
extent[1].y=(double) (-height/2.0);
|
|
|
extent[2].x=(double) (-width/2.0);
|
|
|
extent[2].y=(double) height/2.0;
|
|
|
extent[3].x=(double) width/2.0;
|
|
|
extent[3].y=(double) height/2.0;
|
|
|
for (i=0; i < 4; i++)
|
|
|
{
|
|
|
extent[i].x+=x_shear*extent[i].y;
|
|
|
extent[i].y+=y_shear*extent[i].x;
|
|
|
if (rotate != MagickFalse)
|
|
|
extent[i].x+=x_shear*extent[i].y;
|
|
|
extent[i].x+=(double) (*image)->columns/2.0;
|
|
|
extent[i].y+=(double) (*image)->rows/2.0;
|
|
|
}
|
|
|
min=extent[0];
|
|
|
max=extent[0];
|
|
|
for (i=1; i < 4; i++)
|
|
|
{
|
|
|
if (min.x > extent[i].x)
|
|
|
min.x=extent[i].x;
|
|
|
if (min.y > extent[i].y)
|
|
|
min.y=extent[i].y;
|
|
|
if (max.x < extent[i].x)
|
|
|
max.x=extent[i].x;
|
|
|
if (max.y < extent[i].y)
|
|
|
max.y=extent[i].y;
|
|
|
}
|
|
|
geometry.x=CastDoubleToLong(ceil(min.x-0.5));
|
|
|
geometry.y=CastDoubleToLong(ceil(min.y-0.5));
|
|
|
geometry.width=(size_t) CastDoubleToLong(floor(max.x-min.x+0.5));
|
|
|
geometry.height=(size_t) CastDoubleToLong(floor(max.y-min.y+0.5));
|
|
|
page=(*image)->page;
|
|
|
(void) ParseAbsoluteGeometry("0x0+0+0",&(*image)->page);
|
|
|
crop_image=CropImage(*image,&geometry,exception);
|
|
|
if (crop_image == (Image *) NULL)
|
|
|
return(MagickFalse);
|
|
|
crop_image->page=page;
|
|
|
*image=DestroyImage(*image);
|
|
|
*image=crop_image;
|
|
|
return(MagickTrue);
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
% D e s k e w I m a g e %
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
%
|
|
|
% DeskewImage() removes skew from the image. Skew is an artifact that
|
|
|
% occurs in scanned images because of the camera being misaligned,
|
|
|
% imperfections in the scanning or surface, or simply because the paper was
|
|
|
% not placed completely flat when scanned.
|
|
|
%
|
|
|
% The result will be auto-croped if the artifact "deskew:auto-crop" is
|
|
|
% defined, while the amount the image is to be deskewed, in degrees is also
|
|
|
% saved as the artifact "deskew:angle".
|
|
|
%
|
|
|
% The format of the DeskewImage method is:
|
|
|
%
|
|
|
% Image *DeskewImage(const Image *image,const double threshold,
|
|
|
% ExceptionInfo *exception)
|
|
|
%
|
|
|
% A description of each parameter follows:
|
|
|
%
|
|
|
% o image: the image.
|
|
|
%
|
|
|
% o threshold: separate background from foreground.
|
|
|
%
|
|
|
% o exception: return any errors or warnings in this structure.
|
|
|
%
|
|
|
*/
|
|
|
|
|
|
static void RadonProjection(const Image *image,MatrixInfo *source_matrixs,
|
|
|
MatrixInfo *destination_matrixs,const ssize_t sign,size_t *projection)
|
|
|
{
|
|
|
MatrixInfo
|
|
|
*swap;
|
|
|
|
|
|
MatrixInfo
|
|
|
*p,
|
|
|
*q;
|
|
|
|
|
|
ssize_t
|
|
|
x;
|
|
|
|
|
|
size_t
|
|
|
step;
|
|
|
|
|
|
p=source_matrixs;
|
|
|
q=destination_matrixs;
|
|
|
for (step=1; step < GetMatrixColumns(p); step*=2)
|
|
|
{
|
|
|
for (x=0; x < (ssize_t) GetMatrixColumns(p); x+=2*(ssize_t) step)
|
|
|
{
|
|
|
ssize_t
|
|
|
i;
|
|
|
|
|
|
ssize_t
|
|
|
y;
|
|
|
|
|
|
unsigned short
|
|
|
element,
|
|
|
neighbor;
|
|
|
|
|
|
for (i=0; i < (ssize_t) step; i++)
|
|
|
{
|
|
|
for (y=0; y < (ssize_t) (GetMatrixRows(p)-i-1); y++)
|
|
|
{
|
|
|
if (GetMatrixElement(p,x+i,y,&element) == MagickFalse)
|
|
|
continue;
|
|
|
if (GetMatrixElement(p,x+i+step,y+i,&neighbor) == MagickFalse)
|
|
|
continue;
|
|
|
neighbor+=element;
|
|
|
if (SetMatrixElement(q,x+2*i,y,&neighbor) == MagickFalse)
|
|
|
continue;
|
|
|
if (GetMatrixElement(p,x+i+step,y+i+1,&neighbor) == MagickFalse)
|
|
|
continue;
|
|
|
neighbor+=element;
|
|
|
if (SetMatrixElement(q,x+2*i+1,y,&neighbor) == MagickFalse)
|
|
|
continue;
|
|
|
}
|
|
|
for ( ; y < (ssize_t) (GetMatrixRows(p)-i); y++)
|
|
|
{
|
|
|
if (GetMatrixElement(p,x+i,y,&element) == MagickFalse)
|
|
|
continue;
|
|
|
if (GetMatrixElement(p,x+i+step,y+i,&neighbor) == MagickFalse)
|
|
|
continue;
|
|
|
neighbor+=element;
|
|
|
if (SetMatrixElement(q,x+2*i,y,&neighbor) == MagickFalse)
|
|
|
continue;
|
|
|
if (SetMatrixElement(q,x+2*i+1,y,&element) == MagickFalse)
|
|
|
continue;
|
|
|
}
|
|
|
for ( ; y < (ssize_t) GetMatrixRows(p); y++)
|
|
|
{
|
|
|
if (GetMatrixElement(p,x+i,y,&element) == MagickFalse)
|
|
|
continue;
|
|
|
if (SetMatrixElement(q,x+2*i,y,&element) == MagickFalse)
|
|
|
continue;
|
|
|
if (SetMatrixElement(q,x+2*i+1,y,&element) == MagickFalse)
|
|
|
continue;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
swap=p;
|
|
|
p=q;
|
|
|
q=swap;
|
|
|
}
|
|
|
#if defined(MAGICKCORE_OPENMP_SUPPORT)
|
|
|
#pragma omp parallel for schedule(static) \
|
|
|
magick_number_threads(image,image,GetMatrixColumns(p),1)
|
|
|
#endif
|
|
|
for (x=0; x < (ssize_t) GetMatrixColumns(p); x++)
|
|
|
{
|
|
|
ssize_t
|
|
|
y;
|
|
|
|
|
|
size_t
|
|
|
sum;
|
|
|
|
|
|
sum=0;
|
|
|
for (y=0; y < (ssize_t) (GetMatrixRows(p)-1); y++)
|
|
|
{
|
|
|
ssize_t
|
|
|
delta;
|
|
|
|
|
|
unsigned short
|
|
|
element,
|
|
|
neighbor;
|
|
|
|
|
|
if (GetMatrixElement(p,x,y,&element) == MagickFalse)
|
|
|
continue;
|
|
|
if (GetMatrixElement(p,x,y+1,&neighbor) == MagickFalse)
|
|
|
continue;
|
|
|
delta=(ssize_t) element-(ssize_t) neighbor;
|
|
|
sum+=delta*delta;
|
|
|
}
|
|
|
projection[GetMatrixColumns(p)+sign*x-1]=sum;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
static MagickBooleanType RadonTransform(const Image *image,
|
|
|
const double threshold,size_t *projection,ExceptionInfo *exception)
|
|
|
{
|
|
|
CacheView
|
|
|
*image_view;
|
|
|
|
|
|
MatrixInfo
|
|
|
*destination_matrixs,
|
|
|
*source_matrixs;
|
|
|
|
|
|
MagickBooleanType
|
|
|
status;
|
|
|
|
|
|
size_t
|
|
|
count,
|
|
|
width;
|
|
|
|
|
|
ssize_t
|
|
|
j,
|
|
|
y;
|
|
|
|
|
|
unsigned char
|
|
|
c;
|
|
|
|
|
|
unsigned short
|
|
|
bits[256];
|
|
|
|
|
|
for (width=1; width < ((image->columns+7)/8); width<<=1) ;
|
|
|
source_matrixs=AcquireMatrixInfo(width,image->rows,sizeof(unsigned short),
|
|
|
exception);
|
|
|
destination_matrixs=AcquireMatrixInfo(width,image->rows,
|
|
|
sizeof(unsigned short),exception);
|
|
|
if ((source_matrixs == (MatrixInfo *) NULL) ||
|
|
|
(destination_matrixs == (MatrixInfo *) NULL))
|
|
|
{
|
|
|
if (destination_matrixs != (MatrixInfo *) NULL)
|
|
|
destination_matrixs=DestroyMatrixInfo(destination_matrixs);
|
|
|
if (source_matrixs != (MatrixInfo *) NULL)
|
|
|
source_matrixs=DestroyMatrixInfo(source_matrixs);
|
|
|
return(MagickFalse);
|
|
|
}
|
|
|
if (NullMatrix(source_matrixs) == MagickFalse)
|
|
|
{
|
|
|
destination_matrixs=DestroyMatrixInfo(destination_matrixs);
|
|
|
source_matrixs=DestroyMatrixInfo(source_matrixs);
|
|
|
return(MagickFalse);
|
|
|
}
|
|
|
for (j=0; j < 256; j++)
|
|
|
{
|
|
|
c=(unsigned char) j;
|
|
|
for (count=0; c != 0; c>>=1)
|
|
|
count+=c & 0x01;
|
|
|
bits[j]=(unsigned short) count;
|
|
|
}
|
|
|
status=MagickTrue;
|
|
|
image_view=AcquireVirtualCacheView(image,exception);
|
|
|
#if defined(MAGICKCORE_OPENMP_SUPPORT)
|
|
|
#pragma omp parallel for schedule(static) shared(status) \
|
|
|
magick_number_threads(image,image,image->rows,1)
|
|
|
#endif
|
|
|
for (y=0; y < (ssize_t) image->rows; y++)
|
|
|
{
|
|
|
const Quantum
|
|
|
*magick_restrict p;
|
|
|
|
|
|
ssize_t
|
|
|
i,
|
|
|
x;
|
|
|
|
|
|
size_t
|
|
|
bit,
|
|
|
byte;
|
|
|
|
|
|
unsigned short
|
|
|
value;
|
|
|
|
|
|
if (status == MagickFalse)
|
|
|
continue;
|
|
|
p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
|
|
|
if (p == (const Quantum *) NULL)
|
|
|
{
|
|
|
status=MagickFalse;
|
|
|
continue;
|
|
|
}
|
|
|
bit=0;
|
|
|
byte=0;
|
|
|
i=(ssize_t) (image->columns+7)/8;
|
|
|
for (x=0; x < (ssize_t) image->columns; x++)
|
|
|
{
|
|
|
byte<<=1;
|
|
|
if (((MagickRealType) GetPixelRed(image,p) < threshold) ||
|
|
|
((MagickRealType) GetPixelGreen(image,p) < threshold) ||
|
|
|
((MagickRealType) GetPixelBlue(image,p) < threshold))
|
|
|
byte|=0x01;
|
|
|
bit++;
|
|
|
if (bit == 8)
|
|
|
{
|
|
|
value=bits[byte];
|
|
|
(void) SetMatrixElement(source_matrixs,--i,y,&value);
|
|
|
bit=0;
|
|
|
byte=0;
|
|
|
}
|
|
|
p+=GetPixelChannels(image);
|
|
|
}
|
|
|
if (bit != 0)
|
|
|
{
|
|
|
byte<<=(8-bit);
|
|
|
value=bits[byte];
|
|
|
(void) SetMatrixElement(source_matrixs,--i,y,&value);
|
|
|
}
|
|
|
}
|
|
|
RadonProjection(image,source_matrixs,destination_matrixs,-1,projection);
|
|
|
(void) NullMatrix(source_matrixs);
|
|
|
#if defined(MAGICKCORE_OPENMP_SUPPORT)
|
|
|
#pragma omp parallel for schedule(static) shared(status) \
|
|
|
magick_number_threads(image,image,image->rows,1)
|
|
|
#endif
|
|
|
for (y=0; y < (ssize_t) image->rows; y++)
|
|
|
{
|
|
|
const Quantum
|
|
|
*magick_restrict p;
|
|
|
|
|
|
ssize_t
|
|
|
i,
|
|
|
x;
|
|
|
|
|
|
size_t
|
|
|
bit,
|
|
|
byte;
|
|
|
|
|
|
unsigned short
|
|
|
value;
|
|
|
|
|
|
if (status == MagickFalse)
|
|
|
continue;
|
|
|
p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
|
|
|
if (p == (const Quantum *) NULL)
|
|
|
{
|
|
|
status=MagickFalse;
|
|
|
continue;
|
|
|
}
|
|
|
bit=0;
|
|
|
byte=0;
|
|
|
i=0;
|
|
|
for (x=0; x < (ssize_t) image->columns; x++)
|
|
|
{
|
|
|
byte<<=1;
|
|
|
if (((MagickRealType) GetPixelRed(image,p) < threshold) ||
|
|
|
((MagickRealType) GetPixelGreen(image,p) < threshold) ||
|
|
|
((MagickRealType) GetPixelBlue(image,p) < threshold))
|
|
|
byte|=0x01;
|
|
|
bit++;
|
|
|
if (bit == 8)
|
|
|
{
|
|
|
value=bits[byte];
|
|
|
(void) SetMatrixElement(source_matrixs,i++,y,&value);
|
|
|
bit=0;
|
|
|
byte=0;
|
|
|
}
|
|
|
p+=GetPixelChannels(image);
|
|
|
}
|
|
|
if (bit != 0)
|
|
|
{
|
|
|
byte<<=(8-bit);
|
|
|
value=bits[byte];
|
|
|
(void) SetMatrixElement(source_matrixs,i++,y,&value);
|
|
|
}
|
|
|
}
|
|
|
RadonProjection(image,source_matrixs,destination_matrixs,1,projection);
|
|
|
image_view=DestroyCacheView(image_view);
|
|
|
destination_matrixs=DestroyMatrixInfo(destination_matrixs);
|
|
|
source_matrixs=DestroyMatrixInfo(source_matrixs);
|
|
|
return(MagickTrue);
|
|
|
}
|
|
|
|
|
|
static void GetImageBackgroundColor(Image *image,const ssize_t offset,
|
|
|
ExceptionInfo *exception)
|
|
|
{
|
|
|
CacheView
|
|
|
*image_view;
|
|
|
|
|
|
PixelInfo
|
|
|
background;
|
|
|
|
|
|
double
|
|
|
count;
|
|
|
|
|
|
ssize_t
|
|
|
y;
|
|
|
|
|
|
/*
|
|
|
Compute average background color.
|
|
|
*/
|
|
|
if (offset <= 0)
|
|
|
return;
|
|
|
GetPixelInfo(image,&background);
|
|
|
count=0.0;
|
|
|
image_view=AcquireVirtualCacheView(image,exception);
|
|
|
for (y=0; y < (ssize_t) image->rows; y++)
|
|
|
{
|
|
|
const Quantum
|
|
|
*magick_restrict p;
|
|
|
|
|
|
ssize_t
|
|
|
x;
|
|
|
|
|
|
if ((y >= offset) && (y < ((ssize_t) image->rows-offset)))
|
|
|
continue;
|
|
|
p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
|
|
|
if (p == (const Quantum *) NULL)
|
|
|
continue;
|
|
|
for (x=0; x < (ssize_t) image->columns; x++)
|
|
|
{
|
|
|
if ((x >= offset) && (x < ((ssize_t) image->columns-offset)))
|
|
|
continue;
|
|
|
background.red+=QuantumScale*GetPixelRed(image,p);
|
|
|
background.green+=QuantumScale*GetPixelGreen(image,p);
|
|
|
background.blue+=QuantumScale*GetPixelBlue(image,p);
|
|
|
if ((GetPixelAlphaTraits(image) & UpdatePixelTrait) != 0)
|
|
|
background.alpha+=QuantumScale*GetPixelAlpha(image,p);
|
|
|
count++;
|
|
|
p+=GetPixelChannels(image);
|
|
|
}
|
|
|
}
|
|
|
image_view=DestroyCacheView(image_view);
|
|
|
image->background_color.red=(double) ClampToQuantum(QuantumRange*
|
|
|
background.red/count);
|
|
|
image->background_color.green=(double) ClampToQuantum(QuantumRange*
|
|
|
background.green/count);
|
|
|
image->background_color.blue=(double) ClampToQuantum(QuantumRange*
|
|
|
background.blue/count);
|
|
|
if ((GetPixelAlphaTraits(image) & UpdatePixelTrait) != 0)
|
|
|
image->background_color.alpha=(double) ClampToQuantum(QuantumRange*
|
|
|
background.alpha/count);
|
|
|
}
|
|
|
|
|
|
MagickExport Image *DeskewImage(const Image *image,const double threshold,
|
|
|
ExceptionInfo *exception)
|
|
|
{
|
|
|
AffineMatrix
|
|
|
affine_matrix;
|
|
|
|
|
|
const char
|
|
|
*artifact;
|
|
|
|
|
|
double
|
|
|
degrees;
|
|
|
|
|
|
Image
|
|
|
*clone_image,
|
|
|
*crop_image,
|
|
|
*deskew_image,
|
|
|
*median_image;
|
|
|
|
|
|
MagickBooleanType
|
|
|
status;
|
|
|
|
|
|
RectangleInfo
|
|
|
geometry;
|
|
|
|
|
|
ssize_t
|
|
|
i;
|
|
|
|
|
|
size_t
|
|
|
max_projection,
|
|
|
*projection,
|
|
|
width;
|
|
|
|
|
|
ssize_t
|
|
|
skew;
|
|
|
|
|
|
/*
|
|
|
Compute deskew angle.
|
|
|
*/
|
|
|
for (width=1; width < ((image->columns+7)/8); width<<=1) ;
|
|
|
projection=(size_t *) AcquireQuantumMemory((size_t) (2*width-1),
|
|
|
sizeof(*projection));
|
|
|
if (projection == (size_t *) NULL)
|
|
|
ThrowImageException(ResourceLimitError,"MemoryAllocationFailed");
|
|
|
status=RadonTransform(image,threshold,projection,exception);
|
|
|
if (status == MagickFalse)
|
|
|
{
|
|
|
projection=(size_t *) RelinquishMagickMemory(projection);
|
|
|
ThrowImageException(ResourceLimitError,"MemoryAllocationFailed");
|
|
|
}
|
|
|
max_projection=0;
|
|
|
skew=0;
|
|
|
for (i=0; i < (ssize_t) (2*width-1); i++)
|
|
|
{
|
|
|
if (projection[i] > max_projection)
|
|
|
{
|
|
|
skew=i-(ssize_t) width+1;
|
|
|
max_projection=projection[i];
|
|
|
}
|
|
|
}
|
|
|
projection=(size_t *) RelinquishMagickMemory(projection);
|
|
|
degrees=RadiansToDegrees(-atan((double) skew/width/8));
|
|
|
if (image->debug != MagickFalse)
|
|
|
(void) LogMagickEvent(TransformEvent,GetMagickModule(),
|
|
|
" Deskew angle: %g",degrees);
|
|
|
/*
|
|
|
Deskew image.
|
|
|
*/
|
|
|
clone_image=CloneImage(image,0,0,MagickTrue,exception);
|
|
|
if (clone_image == (Image *) NULL)
|
|
|
return((Image *) NULL);
|
|
|
{
|
|
|
char
|
|
|
angle[MagickPathExtent];
|
|
|
|
|
|
(void) FormatLocaleString(angle,MagickPathExtent,"%.20g",degrees);
|
|
|
(void) SetImageArtifact(clone_image,"deskew:angle",angle);
|
|
|
}
|
|
|
(void) SetImageVirtualPixelMethod(clone_image,BackgroundVirtualPixelMethod,
|
|
|
exception);
|
|
|
affine_matrix.sx=cos(DegreesToRadians(fmod((double) degrees,360.0)));
|
|
|
affine_matrix.rx=sin(DegreesToRadians(fmod((double) degrees,360.0)));
|
|
|
affine_matrix.ry=(-sin(DegreesToRadians(fmod((double) degrees,360.0))));
|
|
|
affine_matrix.sy=cos(DegreesToRadians(fmod((double) degrees,360.0)));
|
|
|
affine_matrix.tx=0.0;
|
|
|
affine_matrix.ty=0.0;
|
|
|
artifact=GetImageArtifact(image,"deskew:auto-crop");
|
|
|
if (IsStringTrue(artifact) == MagickFalse)
|
|
|
{
|
|
|
deskew_image=AffineTransformImage(clone_image,&affine_matrix,exception);
|
|
|
clone_image=DestroyImage(clone_image);
|
|
|
return(deskew_image);
|
|
|
}
|
|
|
/*
|
|
|
Auto-crop image.
|
|
|
*/
|
|
|
GetImageBackgroundColor(clone_image,(ssize_t) StringToLong(artifact),
|
|
|
exception);
|
|
|
deskew_image=AffineTransformImage(clone_image,&affine_matrix,exception);
|
|
|
clone_image=DestroyImage(clone_image);
|
|
|
if (deskew_image == (Image *) NULL)
|
|
|
return((Image *) NULL);
|
|
|
median_image=StatisticImage(deskew_image,MedianStatistic,3,3,exception);
|
|
|
if (median_image == (Image *) NULL)
|
|
|
{
|
|
|
deskew_image=DestroyImage(deskew_image);
|
|
|
return((Image *) NULL);
|
|
|
}
|
|
|
geometry=GetImageBoundingBox(median_image,exception);
|
|
|
median_image=DestroyImage(median_image);
|
|
|
if (image->debug != MagickFalse)
|
|
|
(void) LogMagickEvent(TransformEvent,GetMagickModule()," Deskew geometry: "
|
|
|
"%.20gx%.20g%+.20g%+.20g",(double) geometry.width,(double)
|
|
|
geometry.height,(double) geometry.x,(double) geometry.y);
|
|
|
crop_image=CropImage(deskew_image,&geometry,exception);
|
|
|
deskew_image=DestroyImage(deskew_image);
|
|
|
return(crop_image);
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
% I n t e g r a l R o t a t e I m a g e %
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
%
|
|
|
% IntegralRotateImage() rotates the image an integral of 90 degrees. It
|
|
|
% allocates the memory necessary for the new Image structure and returns a
|
|
|
% pointer to the rotated image.
|
|
|
%
|
|
|
% The format of the IntegralRotateImage method is:
|
|
|
%
|
|
|
% Image *IntegralRotateImage(const Image *image,size_t rotations,
|
|
|
% ExceptionInfo *exception)
|
|
|
%
|
|
|
% A description of each parameter follows.
|
|
|
%
|
|
|
% o image: the image.
|
|
|
%
|
|
|
% o rotations: Specifies the number of 90 degree rotations.
|
|
|
%
|
|
|
*/
|
|
|
MagickExport Image *IntegralRotateImage(const Image *image,size_t rotations,
|
|
|
ExceptionInfo *exception)
|
|
|
{
|
|
|
#define RotateImageTag "Rotate/Image"
|
|
|
|
|
|
CacheView
|
|
|
*image_view,
|
|
|
*rotate_view;
|
|
|
|
|
|
Image
|
|
|
*rotate_image;
|
|
|
|
|
|
MagickBooleanType
|
|
|
status;
|
|
|
|
|
|
MagickOffsetType
|
|
|
progress;
|
|
|
|
|
|
RectangleInfo
|
|
|
page;
|
|
|
|
|
|
/*
|
|
|
Initialize rotated image attributes.
|
|
|
*/
|
|
|
assert(image != (Image *) NULL);
|
|
|
page=image->page;
|
|
|
rotations%=4;
|
|
|
switch (rotations)
|
|
|
{
|
|
|
case 0:
|
|
|
default:
|
|
|
{
|
|
|
rotate_image=CloneImage(image,0,0,MagickTrue,exception);
|
|
|
break;
|
|
|
}
|
|
|
case 2:
|
|
|
{
|
|
|
rotate_image=CloneImage(image,image->columns,image->rows,MagickTrue,
|
|
|
exception);
|
|
|
break;
|
|
|
}
|
|
|
case 1:
|
|
|
case 3:
|
|
|
{
|
|
|
rotate_image=CloneImage(image,image->rows,image->columns,MagickTrue,
|
|
|
exception);
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
if (rotate_image == (Image *) NULL)
|
|
|
return((Image *) NULL);
|
|
|
if (rotations == 0)
|
|
|
return(rotate_image);
|
|
|
/*
|
|
|
Integral rotate the image.
|
|
|
*/
|
|
|
status=MagickTrue;
|
|
|
progress=0;
|
|
|
image_view=AcquireVirtualCacheView(image,exception);
|
|
|
rotate_view=AcquireAuthenticCacheView(rotate_image,exception);
|
|
|
switch (rotations)
|
|
|
{
|
|
|
case 1:
|
|
|
{
|
|
|
size_t
|
|
|
tile_height,
|
|
|
tile_width;
|
|
|
|
|
|
ssize_t
|
|
|
tile_y;
|
|
|
|
|
|
/*
|
|
|
Rotate 90 degrees.
|
|
|
*/
|
|
|
GetPixelCacheTileSize(image,&tile_width,&tile_height);
|
|
|
tile_width=image->columns;
|
|
|
#if defined(MAGICKCORE_OPENMP_SUPPORT)
|
|
|
#pragma omp parallel for schedule(static) shared(status) \
|
|
|
magick_number_threads(image,rotate_image,image->rows/tile_height,1)
|
|
|
#endif
|
|
|
for (tile_y=0; tile_y < (ssize_t) image->rows; tile_y+=(ssize_t) tile_height)
|
|
|
{
|
|
|
ssize_t
|
|
|
tile_x;
|
|
|
|
|
|
if (status == MagickFalse)
|
|
|
continue;
|
|
|
tile_x=0;
|
|
|
for ( ; tile_x < (ssize_t) image->columns; tile_x+=(ssize_t) tile_width)
|
|
|
{
|
|
|
MagickBooleanType
|
|
|
sync;
|
|
|
|
|
|
const Quantum
|
|
|
*magick_restrict p;
|
|
|
|
|
|
Quantum
|
|
|
*magick_restrict q;
|
|
|
|
|
|
ssize_t
|
|
|
y;
|
|
|
|
|
|
size_t
|
|
|
height,
|
|
|
width;
|
|
|
|
|
|
width=tile_width;
|
|
|
if ((tile_width+tile_x) > image->columns)
|
|
|
width=(size_t) (tile_width-(tile_x+tile_width-image->columns));
|
|
|
height=tile_height;
|
|
|
if ((tile_height+tile_y) > image->rows)
|
|
|
height=(size_t) (tile_height-(tile_y+tile_height-image->rows));
|
|
|
p=GetCacheViewVirtualPixels(image_view,tile_x,tile_y,width,height,
|
|
|
exception);
|
|
|
if (p == (const Quantum *) NULL)
|
|
|
{
|
|
|
status=MagickFalse;
|
|
|
break;
|
|
|
}
|
|
|
for (y=0; y < (ssize_t) width; y++)
|
|
|
{
|
|
|
const Quantum
|
|
|
*magick_restrict tile_pixels;
|
|
|
|
|
|
ssize_t
|
|
|
x;
|
|
|
|
|
|
if (status == MagickFalse)
|
|
|
continue;
|
|
|
q=QueueCacheViewAuthenticPixels(rotate_view,(ssize_t)
|
|
|
(rotate_image->columns-(tile_y+height)),y+tile_x,height,1,
|
|
|
exception);
|
|
|
if (q == (Quantum *) NULL)
|
|
|
{
|
|
|
status=MagickFalse;
|
|
|
continue;
|
|
|
}
|
|
|
tile_pixels=p+((height-1)*width+y)*GetPixelChannels(image);
|
|
|
for (x=0; x < (ssize_t) height; x++)
|
|
|
{
|
|
|
ssize_t
|
|
|
i;
|
|
|
|
|
|
for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
|
|
|
{
|
|
|
PixelChannel channel = GetPixelChannelChannel(image,i);
|
|
|
PixelTrait traits = GetPixelChannelTraits(image,channel);
|
|
|
PixelTrait rotate_traits = GetPixelChannelTraits(rotate_image,
|
|
|
channel);
|
|
|
if ((traits == UndefinedPixelTrait) ||
|
|
|
(rotate_traits == UndefinedPixelTrait))
|
|
|
continue;
|
|
|
SetPixelChannel(rotate_image,channel,tile_pixels[i],q);
|
|
|
}
|
|
|
tile_pixels-=width*GetPixelChannels(image);
|
|
|
q+=GetPixelChannels(rotate_image);
|
|
|
}
|
|
|
sync=SyncCacheViewAuthenticPixels(rotate_view,exception);
|
|
|
if (sync == MagickFalse)
|
|
|
status=MagickFalse;
|
|
|
}
|
|
|
}
|
|
|
if (image->progress_monitor != (MagickProgressMonitor) NULL)
|
|
|
{
|
|
|
MagickBooleanType
|
|
|
proceed;
|
|
|
|
|
|
proceed=SetImageProgress(image,RotateImageTag,progress+=tile_height,
|
|
|
image->rows);
|
|
|
if (proceed == MagickFalse)
|
|
|
status=MagickFalse;
|
|
|
}
|
|
|
}
|
|
|
(void) SetImageProgress(image,RotateImageTag,(MagickOffsetType)
|
|
|
image->rows-1,image->rows);
|
|
|
Swap(page.width,page.height);
|
|
|
Swap(page.x,page.y);
|
|
|
if (page.width != 0)
|
|
|
page.x=(ssize_t) (page.width-rotate_image->columns-page.x);
|
|
|
break;
|
|
|
}
|
|
|
case 2:
|
|
|
{
|
|
|
ssize_t
|
|
|
y;
|
|
|
|
|
|
/*
|
|
|
Rotate 180 degrees.
|
|
|
*/
|
|
|
#if defined(MAGICKCORE_OPENMP_SUPPORT)
|
|
|
#pragma omp parallel for schedule(static) shared(status) \
|
|
|
magick_number_threads(image,rotate_image,image->rows,1)
|
|
|
#endif
|
|
|
for (y=0; y < (ssize_t) image->rows; y++)
|
|
|
{
|
|
|
MagickBooleanType
|
|
|
sync;
|
|
|
|
|
|
const Quantum
|
|
|
*magick_restrict p;
|
|
|
|
|
|
Quantum
|
|
|
*magick_restrict q;
|
|
|
|
|
|
ssize_t
|
|
|
x;
|
|
|
|
|
|
if (status == MagickFalse)
|
|
|
continue;
|
|
|
p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
|
|
|
q=QueueCacheViewAuthenticPixels(rotate_view,0,(ssize_t) (image->rows-y-
|
|
|
1),image->columns,1,exception);
|
|
|
if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
|
|
|
{
|
|
|
status=MagickFalse;
|
|
|
continue;
|
|
|
}
|
|
|
q+=GetPixelChannels(rotate_image)*image->columns;
|
|
|
for (x=0; x < (ssize_t) image->columns; x++)
|
|
|
{
|
|
|
ssize_t
|
|
|
i;
|
|
|
|
|
|
q-=GetPixelChannels(rotate_image);
|
|
|
for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
|
|
|
{
|
|
|
PixelChannel channel = GetPixelChannelChannel(image,i);
|
|
|
PixelTrait traits = GetPixelChannelTraits(image,channel);
|
|
|
PixelTrait rotate_traits = GetPixelChannelTraits(rotate_image,
|
|
|
channel);
|
|
|
if ((traits == UndefinedPixelTrait) ||
|
|
|
(rotate_traits == UndefinedPixelTrait))
|
|
|
continue;
|
|
|
SetPixelChannel(rotate_image,channel,p[i],q);
|
|
|
}
|
|
|
p+=GetPixelChannels(image);
|
|
|
}
|
|
|
sync=SyncCacheViewAuthenticPixels(rotate_view,exception);
|
|
|
if (sync == MagickFalse)
|
|
|
status=MagickFalse;
|
|
|
if (image->progress_monitor != (MagickProgressMonitor) NULL)
|
|
|
{
|
|
|
MagickBooleanType
|
|
|
proceed;
|
|
|
|
|
|
proceed=SetImageProgress(image,RotateImageTag,progress++,
|
|
|
image->rows);
|
|
|
if (proceed == MagickFalse)
|
|
|
status=MagickFalse;
|
|
|
}
|
|
|
}
|
|
|
(void) SetImageProgress(image,RotateImageTag,(MagickOffsetType)
|
|
|
image->rows-1,image->rows);
|
|
|
if (page.width != 0)
|
|
|
page.x=(ssize_t) (page.width-rotate_image->columns-page.x);
|
|
|
if (page.height != 0)
|
|
|
page.y=(ssize_t) (page.height-rotate_image->rows-page.y);
|
|
|
break;
|
|
|
}
|
|
|
case 3:
|
|
|
{
|
|
|
size_t
|
|
|
tile_height,
|
|
|
tile_width;
|
|
|
|
|
|
ssize_t
|
|
|
tile_y;
|
|
|
|
|
|
/*
|
|
|
Rotate 270 degrees.
|
|
|
*/
|
|
|
GetPixelCacheTileSize(image,&tile_width,&tile_height);
|
|
|
tile_width=image->columns;
|
|
|
#if defined(MAGICKCORE_OPENMP_SUPPORT)
|
|
|
#pragma omp parallel for schedule(static) shared(status) \
|
|
|
magick_number_threads(image,rotate_image,image->rows/tile_height,1)
|
|
|
#endif
|
|
|
for (tile_y=0; tile_y < (ssize_t) image->rows; tile_y+=(ssize_t) tile_height)
|
|
|
{
|
|
|
ssize_t
|
|
|
tile_x;
|
|
|
|
|
|
if (status == MagickFalse)
|
|
|
continue;
|
|
|
tile_x=0;
|
|
|
for ( ; tile_x < (ssize_t) image->columns; tile_x+=(ssize_t) tile_width)
|
|
|
{
|
|
|
MagickBooleanType
|
|
|
sync;
|
|
|
|
|
|
const Quantum
|
|
|
*magick_restrict p;
|
|
|
|
|
|
Quantum
|
|
|
*magick_restrict q;
|
|
|
|
|
|
ssize_t
|
|
|
y;
|
|
|
|
|
|
size_t
|
|
|
height,
|
|
|
width;
|
|
|
|
|
|
width=tile_width;
|
|
|
if ((tile_width+tile_x) > image->columns)
|
|
|
width=(size_t) (tile_width-(tile_x+tile_width-image->columns));
|
|
|
height=tile_height;
|
|
|
if ((tile_height+tile_y) > image->rows)
|
|
|
height=(size_t) (tile_height-(tile_y+tile_height-image->rows));
|
|
|
p=GetCacheViewVirtualPixels(image_view,tile_x,tile_y,width,height,
|
|
|
exception);
|
|
|
if (p == (const Quantum *) NULL)
|
|
|
{
|
|
|
status=MagickFalse;
|
|
|
break;
|
|
|
}
|
|
|
for (y=0; y < (ssize_t) width; y++)
|
|
|
{
|
|
|
const Quantum
|
|
|
*magick_restrict tile_pixels;
|
|
|
|
|
|
ssize_t
|
|
|
x;
|
|
|
|
|
|
if (status == MagickFalse)
|
|
|
continue;
|
|
|
q=QueueCacheViewAuthenticPixels(rotate_view,tile_y,(ssize_t) (y+
|
|
|
rotate_image->rows-(tile_x+width)),height,1,exception);
|
|
|
if (q == (Quantum *) NULL)
|
|
|
{
|
|
|
status=MagickFalse;
|
|
|
continue;
|
|
|
}
|
|
|
tile_pixels=p+((width-1)-y)*GetPixelChannels(image);
|
|
|
for (x=0; x < (ssize_t) height; x++)
|
|
|
{
|
|
|
ssize_t
|
|
|
i;
|
|
|
|
|
|
for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
|
|
|
{
|
|
|
PixelChannel channel = GetPixelChannelChannel(image,i);
|
|
|
PixelTrait traits = GetPixelChannelTraits(image,channel);
|
|
|
PixelTrait rotate_traits = GetPixelChannelTraits(rotate_image,
|
|
|
channel);
|
|
|
if ((traits == UndefinedPixelTrait) ||
|
|
|
(rotate_traits == UndefinedPixelTrait))
|
|
|
continue;
|
|
|
SetPixelChannel(rotate_image,channel,tile_pixels[i],q);
|
|
|
}
|
|
|
tile_pixels+=width*GetPixelChannels(image);
|
|
|
q+=GetPixelChannels(rotate_image);
|
|
|
}
|
|
|
#if defined(MAGICKCORE_OPENMP_SUPPORT)
|
|
|
#pragma omp critical (MagickCore_IntegralRotateImage)
|
|
|
#endif
|
|
|
sync=SyncCacheViewAuthenticPixels(rotate_view,exception);
|
|
|
if (sync == MagickFalse)
|
|
|
status=MagickFalse;
|
|
|
}
|
|
|
}
|
|
|
if (image->progress_monitor != (MagickProgressMonitor) NULL)
|
|
|
{
|
|
|
MagickBooleanType
|
|
|
proceed;
|
|
|
|
|
|
proceed=SetImageProgress(image,RotateImageTag,progress+=tile_height,
|
|
|
image->rows);
|
|
|
if (proceed == MagickFalse)
|
|
|
status=MagickFalse;
|
|
|
}
|
|
|
}
|
|
|
(void) SetImageProgress(image,RotateImageTag,(MagickOffsetType)
|
|
|
image->rows-1,image->rows);
|
|
|
Swap(page.width,page.height);
|
|
|
Swap(page.x,page.y);
|
|
|
if (page.height != 0)
|
|
|
page.y=(ssize_t) (page.height-rotate_image->rows-page.y);
|
|
|
break;
|
|
|
}
|
|
|
default:
|
|
|
break;
|
|
|
}
|
|
|
rotate_view=DestroyCacheView(rotate_view);
|
|
|
image_view=DestroyCacheView(image_view);
|
|
|
rotate_image->type=image->type;
|
|
|
rotate_image->page=page;
|
|
|
if (status == MagickFalse)
|
|
|
rotate_image=DestroyImage(rotate_image);
|
|
|
return(rotate_image);
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
+ X S h e a r I m a g e %
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
%
|
|
|
% XShearImage() shears the image in the X direction with a shear angle of
|
|
|
% 'degrees'. Positive angles shear counter-clockwise (right-hand rule), and
|
|
|
% negative angles shear clockwise. Angles are measured relative to a vertical
|
|
|
% Y-axis. X shears will widen an image creating 'empty' triangles on the left
|
|
|
% and right sides of the source image.
|
|
|
%
|
|
|
% The format of the XShearImage method is:
|
|
|
%
|
|
|
% MagickBooleanType XShearImage(Image *image,const double degrees,
|
|
|
% const size_t width,const size_t height,
|
|
|
% const ssize_t x_offset,const ssize_t y_offset,ExceptionInfo *exception)
|
|
|
%
|
|
|
% A description of each parameter follows.
|
|
|
%
|
|
|
% o image: the image.
|
|
|
%
|
|
|
% o degrees: A double representing the shearing angle along the X
|
|
|
% axis.
|
|
|
%
|
|
|
% o width, height, x_offset, y_offset: Defines a region of the image
|
|
|
% to shear.
|
|
|
%
|
|
|
% o exception: return any errors or warnings in this structure.
|
|
|
%
|
|
|
*/
|
|
|
static MagickBooleanType XShearImage(Image *image,const double degrees,
|
|
|
const size_t width,const size_t height,const ssize_t x_offset,
|
|
|
const ssize_t y_offset,ExceptionInfo *exception)
|
|
|
{
|
|
|
#define XShearImageTag "XShear/Image"
|
|
|
|
|
|
typedef enum
|
|
|
{
|
|
|
LEFT,
|
|
|
RIGHT
|
|
|
} ShearDirection;
|
|
|
|
|
|
CacheView
|
|
|
*image_view;
|
|
|
|
|
|
MagickBooleanType
|
|
|
status;
|
|
|
|
|
|
MagickOffsetType
|
|
|
progress;
|
|
|
|
|
|
PixelInfo
|
|
|
background;
|
|
|
|
|
|
ssize_t
|
|
|
y;
|
|
|
|
|
|
/*
|
|
|
X shear image.
|
|
|
*/
|
|
|
assert(image != (Image *) NULL);
|
|
|
assert(image->signature == MagickCoreSignature);
|
|
|
if (image->debug != MagickFalse)
|
|
|
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
|
|
|
status=MagickTrue;
|
|
|
background=image->background_color;
|
|
|
progress=0;
|
|
|
image_view=AcquireAuthenticCacheView(image,exception);
|
|
|
#if defined(MAGICKCORE_OPENMP_SUPPORT)
|
|
|
#pragma omp parallel for schedule(static) shared(progress,status) \
|
|
|
magick_number_threads(image,image,height,1)
|
|
|
#endif
|
|
|
for (y=0; y < (ssize_t) height; y++)
|
|
|
{
|
|
|
PixelInfo
|
|
|
pixel,
|
|
|
source,
|
|
|
destination;
|
|
|
|
|
|
double
|
|
|
area,
|
|
|
displacement;
|
|
|
|
|
|
Quantum
|
|
|
*magick_restrict p,
|
|
|
*magick_restrict q;
|
|
|
|
|
|
ssize_t
|
|
|
i;
|
|
|
|
|
|
ShearDirection
|
|
|
direction;
|
|
|
|
|
|
ssize_t
|
|
|
step;
|
|
|
|
|
|
if (status == MagickFalse)
|
|
|
continue;
|
|
|
p=GetCacheViewAuthenticPixels(image_view,0,y_offset+y,image->columns,1,
|
|
|
exception);
|
|
|
if (p == (Quantum *) NULL)
|
|
|
{
|
|
|
status=MagickFalse;
|
|
|
continue;
|
|
|
}
|
|
|
p+=x_offset*GetPixelChannels(image);
|
|
|
displacement=degrees*(double) (y-height/2.0);
|
|
|
if (displacement == 0.0)
|
|
|
continue;
|
|
|
if (displacement > 0.0)
|
|
|
direction=RIGHT;
|
|
|
else
|
|
|
{
|
|
|
displacement*=(-1.0);
|
|
|
direction=LEFT;
|
|
|
}
|
|
|
step=CastDoubleToLong(floor((double) displacement));
|
|
|
area=(double) (displacement-step);
|
|
|
step++;
|
|
|
pixel=background;
|
|
|
GetPixelInfo(image,&source);
|
|
|
GetPixelInfo(image,&destination);
|
|
|
switch (direction)
|
|
|
{
|
|
|
case LEFT:
|
|
|
{
|
|
|
/*
|
|
|
Transfer pixels left-to-right.
|
|
|
*/
|
|
|
if (step > x_offset)
|
|
|
break;
|
|
|
q=p-step*GetPixelChannels(image);
|
|
|
for (i=0; i < (ssize_t) width; i++)
|
|
|
{
|
|
|
if ((x_offset+i) < step)
|
|
|
{
|
|
|
p+=GetPixelChannels(image);
|
|
|
GetPixelInfoPixel(image,p,&pixel);
|
|
|
q+=GetPixelChannels(image);
|
|
|
continue;
|
|
|
}
|
|
|
GetPixelInfoPixel(image,p,&source);
|
|
|
CompositePixelInfoAreaBlend(&pixel,(double) pixel.alpha,
|
|
|
&source,(double) GetPixelAlpha(image,p),area,&destination);
|
|
|
SetPixelViaPixelInfo(image,&destination,q);
|
|
|
GetPixelInfoPixel(image,p,&pixel);
|
|
|
p+=GetPixelChannels(image);
|
|
|
q+=GetPixelChannels(image);
|
|
|
}
|
|
|
CompositePixelInfoAreaBlend(&pixel,(double) pixel.alpha,
|
|
|
&background,(double) background.alpha,area,&destination);
|
|
|
SetPixelViaPixelInfo(image,&destination,q);
|
|
|
q+=GetPixelChannels(image);
|
|
|
for (i=0; i < (step-1); i++)
|
|
|
{
|
|
|
SetPixelViaPixelInfo(image,&background,q);
|
|
|
q+=GetPixelChannels(image);
|
|
|
}
|
|
|
break;
|
|
|
}
|
|
|
case RIGHT:
|
|
|
{
|
|
|
/*
|
|
|
Transfer pixels right-to-left.
|
|
|
*/
|
|
|
p+=width*GetPixelChannels(image);
|
|
|
q=p+step*GetPixelChannels(image);
|
|
|
for (i=0; i < (ssize_t) width; i++)
|
|
|
{
|
|
|
p-=GetPixelChannels(image);
|
|
|
q-=GetPixelChannels(image);
|
|
|
if ((size_t) (x_offset+width+step-i) > image->columns)
|
|
|
continue;
|
|
|
GetPixelInfoPixel(image,p,&source);
|
|
|
CompositePixelInfoAreaBlend(&pixel,(double) pixel.alpha,
|
|
|
&source,(double) GetPixelAlpha(image,p),area,&destination);
|
|
|
SetPixelViaPixelInfo(image,&destination,q);
|
|
|
GetPixelInfoPixel(image,p,&pixel);
|
|
|
}
|
|
|
CompositePixelInfoAreaBlend(&pixel,(double) pixel.alpha,
|
|
|
&background,(double) background.alpha,area,&destination);
|
|
|
q-=GetPixelChannels(image);
|
|
|
SetPixelViaPixelInfo(image,&destination,q);
|
|
|
for (i=0; i < (step-1); i++)
|
|
|
{
|
|
|
q-=GetPixelChannels(image);
|
|
|
SetPixelViaPixelInfo(image,&background,q);
|
|
|
}
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
|
|
|
status=MagickFalse;
|
|
|
if (image->progress_monitor != (MagickProgressMonitor) NULL)
|
|
|
{
|
|
|
MagickBooleanType
|
|
|
proceed;
|
|
|
|
|
|
#if defined(MAGICKCORE_OPENMP_SUPPORT)
|
|
|
#pragma omp atomic
|
|
|
#endif
|
|
|
progress++;
|
|
|
proceed=SetImageProgress(image,XShearImageTag,progress,height);
|
|
|
if (proceed == MagickFalse)
|
|
|
status=MagickFalse;
|
|
|
}
|
|
|
}
|
|
|
image_view=DestroyCacheView(image_view);
|
|
|
return(status);
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
+ Y S h e a r I m a g e %
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
%
|
|
|
% YShearImage shears the image in the Y direction with a shear angle of
|
|
|
% 'degrees'. Positive angles shear counter-clockwise (right-hand rule), and
|
|
|
% negative angles shear clockwise. Angles are measured relative to a
|
|
|
% horizontal X-axis. Y shears will increase the height of an image creating
|
|
|
% 'empty' triangles on the top and bottom of the source image.
|
|
|
%
|
|
|
% The format of the YShearImage method is:
|
|
|
%
|
|
|
% MagickBooleanType YShearImage(Image *image,const double degrees,
|
|
|
% const size_t width,const size_t height,
|
|
|
% const ssize_t x_offset,const ssize_t y_offset,ExceptionInfo *exception)
|
|
|
%
|
|
|
% A description of each parameter follows.
|
|
|
%
|
|
|
% o image: the image.
|
|
|
%
|
|
|
% o degrees: A double representing the shearing angle along the Y
|
|
|
% axis.
|
|
|
%
|
|
|
% o width, height, x_offset, y_offset: Defines a region of the image
|
|
|
% to shear.
|
|
|
%
|
|
|
% o exception: return any errors or warnings in this structure.
|
|
|
%
|
|
|
*/
|
|
|
static MagickBooleanType YShearImage(Image *image,const double degrees,
|
|
|
const size_t width,const size_t height,const ssize_t x_offset,
|
|
|
const ssize_t y_offset,ExceptionInfo *exception)
|
|
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{
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#define YShearImageTag "YShear/Image"
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typedef enum
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{
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UP,
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DOWN
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} ShearDirection;
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CacheView
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*image_view;
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MagickBooleanType
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status;
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MagickOffsetType
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progress;
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PixelInfo
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background;
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ssize_t
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x;
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/*
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Y Shear image.
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*/
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assert(image != (Image *) NULL);
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assert(image->signature == MagickCoreSignature);
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if (image->debug != MagickFalse)
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(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
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status=MagickTrue;
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progress=0;
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background=image->background_color;
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image_view=AcquireAuthenticCacheView(image,exception);
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#if defined(MAGICKCORE_OPENMP_SUPPORT)
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#pragma omp parallel for schedule(static) shared(progress,status) \
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magick_number_threads(image,image,width,1)
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#endif
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for (x=0; x < (ssize_t) width; x++)
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{
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double
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area,
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displacement;
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PixelInfo
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pixel,
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source,
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destination;
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Quantum
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*magick_restrict p,
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*magick_restrict q;
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ssize_t
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i;
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ShearDirection
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direction;
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ssize_t
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step;
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if (status == MagickFalse)
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continue;
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p=GetCacheViewAuthenticPixels(image_view,x_offset+x,0,1,image->rows,
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exception);
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if (p == (Quantum *) NULL)
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{
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status=MagickFalse;
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continue;
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}
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p+=y_offset*GetPixelChannels(image);
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displacement=degrees*(double) (x-width/2.0);
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if (displacement == 0.0)
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continue;
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if (displacement > 0.0)
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direction=DOWN;
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else
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{
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displacement*=(-1.0);
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direction=UP;
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}
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step=CastDoubleToLong(floor((double) displacement));
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area=(double) (displacement-step);
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step++;
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pixel=background;
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GetPixelInfo(image,&source);
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GetPixelInfo(image,&destination);
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switch (direction)
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{
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case UP:
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{
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/*
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Transfer pixels top-to-bottom.
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*/
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if (step > y_offset)
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break;
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q=p-step*GetPixelChannels(image);
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for (i=0; i < (ssize_t) height; i++)
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{
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if ((y_offset+i) < step)
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{
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p+=GetPixelChannels(image);
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GetPixelInfoPixel(image,p,&pixel);
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q+=GetPixelChannels(image);
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continue;
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}
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GetPixelInfoPixel(image,p,&source);
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CompositePixelInfoAreaBlend(&pixel,(double) pixel.alpha,
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&source,(double) GetPixelAlpha(image,p),area,
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&destination);
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SetPixelViaPixelInfo(image,&destination,q);
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GetPixelInfoPixel(image,p,&pixel);
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p+=GetPixelChannels(image);
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q+=GetPixelChannels(image);
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}
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CompositePixelInfoAreaBlend(&pixel,(double) pixel.alpha,
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&background,(double) background.alpha,area,&destination);
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SetPixelViaPixelInfo(image,&destination,q);
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q+=GetPixelChannels(image);
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for (i=0; i < (step-1); i++)
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{
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SetPixelViaPixelInfo(image,&background,q);
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q+=GetPixelChannels(image);
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}
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break;
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}
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case DOWN:
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{
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/*
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Transfer pixels bottom-to-top.
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*/
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p+=height*GetPixelChannels(image);
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q=p+step*GetPixelChannels(image);
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for (i=0; i < (ssize_t) height; i++)
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{
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p-=GetPixelChannels(image);
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q-=GetPixelChannels(image);
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if ((size_t) (y_offset+height+step-i) > image->rows)
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continue;
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GetPixelInfoPixel(image,p,&source);
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CompositePixelInfoAreaBlend(&pixel,(double) pixel.alpha,
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&source,(double) GetPixelAlpha(image,p),area,
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&destination);
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SetPixelViaPixelInfo(image,&destination,q);
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GetPixelInfoPixel(image,p,&pixel);
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}
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CompositePixelInfoAreaBlend(&pixel,(double) pixel.alpha,
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&background,(double) background.alpha,area,&destination);
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q-=GetPixelChannels(image);
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SetPixelViaPixelInfo(image,&destination,q);
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for (i=0; i < (step-1); i++)
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{
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q-=GetPixelChannels(image);
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SetPixelViaPixelInfo(image,&background,q);
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}
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break;
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}
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}
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if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
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status=MagickFalse;
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if (image->progress_monitor != (MagickProgressMonitor) NULL)
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{
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MagickBooleanType
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proceed;
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#if defined(MAGICKCORE_OPENMP_SUPPORT)
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#pragma omp atomic
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|
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#endif
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progress++;
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proceed=SetImageProgress(image,YShearImageTag,progress,image->rows);
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if (proceed == MagickFalse)
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status=MagickFalse;
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}
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}
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image_view=DestroyCacheView(image_view);
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return(status);
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}
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% S h e a r I m a g e %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% ShearImage() creates a new image that is a shear_image copy of an existing
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% one. Shearing slides one edge of an image along the X or Y axis, creating
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% a parallelogram. An X direction shear slides an edge along the X axis,
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% while a Y direction shear slides an edge along the Y axis. The amount of
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% the shear is controlled by a shear angle. For X direction shears, x_shear
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% is measured relative to the Y axis, and similarly, for Y direction shears
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% y_shear is measured relative to the X axis. Empty triangles left over from
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% shearing the image are filled with the background color defined by member
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% 'background_color' of the image.. ShearImage() allocates the memory
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% necessary for the new Image structure and returns a pointer to the new image.
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%
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% ShearImage() is based on the paper "A Fast Algorithm for General Raster
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% Rotatation" by Alan W. Paeth.
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%
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% The format of the ShearImage method is:
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%
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% Image *ShearImage(const Image *image,const double x_shear,
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% const double y_shear,ExceptionInfo *exception)
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%
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% A description of each parameter follows.
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%
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% o image: the image.
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%
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% o x_shear, y_shear: Specifies the number of degrees to shear the image.
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%
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% o exception: return any errors or warnings in this structure.
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%
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*/
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MagickExport Image *ShearImage(const Image *image,const double x_shear,
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const double y_shear,ExceptionInfo *exception)
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{
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Image
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*integral_image,
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*shear_image;
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MagickBooleanType
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status;
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PointInfo
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shear;
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RectangleInfo
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border_info,
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bounds;
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assert(image != (Image *) NULL);
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assert(image->signature == MagickCoreSignature);
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if (image->debug != MagickFalse)
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(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
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assert(exception != (ExceptionInfo *) NULL);
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assert(exception->signature == MagickCoreSignature);
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if ((x_shear != 0.0) && (fmod(x_shear,90.0) == 0.0))
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ThrowImageException(ImageError,"AngleIsDiscontinuous");
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if ((y_shear != 0.0) && (fmod(y_shear,90.0) == 0.0))
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ThrowImageException(ImageError,"AngleIsDiscontinuous");
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/*
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|
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Initialize shear angle.
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*/
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integral_image=CloneImage(image,0,0,MagickTrue,exception);
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if (integral_image == (Image *) NULL)
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ThrowImageException(ResourceLimitError,"MemoryAllocationFailed");
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shear.x=(-tan(DegreesToRadians(fmod(x_shear,360.0))));
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shear.y=tan(DegreesToRadians(fmod(y_shear,360.0)));
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if ((shear.x == 0.0) && (shear.y == 0.0))
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return(integral_image);
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if (SetImageStorageClass(integral_image,DirectClass,exception) == MagickFalse)
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{
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integral_image=DestroyImage(integral_image);
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return(integral_image);
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}
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if (integral_image->alpha_trait == UndefinedPixelTrait)
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(void) SetImageAlphaChannel(integral_image,OpaqueAlphaChannel,exception);
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/*
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|
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Compute image size.
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*/
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bounds.width=image->columns+CastDoubleToLong(floor(fabs(shear.x)*
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image->rows+0.5));
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bounds.x=CastDoubleToLong(ceil((double) image->columns+((fabs(shear.x)*
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image->rows)-image->columns)/2.0-0.5));
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bounds.y=CastDoubleToLong(ceil((double) image->rows+((fabs(shear.y)*
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bounds.width)-image->rows)/2.0-0.5));
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|
/*
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|
|
Surround image with border.
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|
*/
|
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integral_image->border_color=integral_image->background_color;
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integral_image->compose=CopyCompositeOp;
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|
border_info.width=(size_t) bounds.x;
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|
border_info.height=(size_t) bounds.y;
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shear_image=BorderImage(integral_image,&border_info,image->compose,exception);
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integral_image=DestroyImage(integral_image);
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|
if (shear_image == (Image *) NULL)
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|
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ThrowImageException(ResourceLimitError,"MemoryAllocationFailed");
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|
|
/*
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|
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Shear the image.
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|
*/
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if (shear_image->alpha_trait == UndefinedPixelTrait)
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(void) SetImageAlphaChannel(shear_image,OpaqueAlphaChannel,exception);
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status=XShearImage(shear_image,shear.x,image->columns,image->rows,bounds.x,
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(ssize_t) (shear_image->rows-image->rows)/2,exception);
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if (status == MagickFalse)
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|
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{
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|
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shear_image=DestroyImage(shear_image);
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|
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return((Image *) NULL);
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|
|
}
|
|
|
status=YShearImage(shear_image,shear.y,bounds.width,image->rows,(ssize_t)
|
|
|
(shear_image->columns-bounds.width)/2,bounds.y,exception);
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|
|
if (status == MagickFalse)
|
|
|
{
|
|
|
shear_image=DestroyImage(shear_image);
|
|
|
return((Image *) NULL);
|
|
|
}
|
|
|
status=CropToFitImage(&shear_image,shear.x,shear.y,(MagickRealType)
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|
|
image->columns,(MagickRealType) image->rows,MagickFalse,exception);
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shear_image->alpha_trait=image->alpha_trait;
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shear_image->compose=image->compose;
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shear_image->page.width=0;
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shear_image->page.height=0;
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if (status == MagickFalse)
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shear_image=DestroyImage(shear_image);
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|
|
return(shear_image);
|
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}
|
|
|
|
|
|
/*
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
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|
% %
|
|
|
% %
|
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% %
|
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|
% S h e a r R o t a t e I m a g e %
|
|
|
% %
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% %
|
|
|
% %
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|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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|
%
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% ShearRotateImage() creates a new image that is a rotated copy of an existing
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|
% one. Positive angles rotate counter-clockwise (right-hand rule), while
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% negative angles rotate clockwise. Rotated images are usually larger than
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|
% the originals and have 'empty' triangular corners. X axis. Empty
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% triangles left over from shearing the image are filled with the background
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|
% color defined by member 'background_color' of the image. ShearRotateImage
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|
|
% allocates the memory necessary for the new Image structure and returns a
|
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|
% pointer to the new image.
|
|
|
%
|
|
|
% ShearRotateImage() is based on the paper "A Fast Algorithm for General
|
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|
% Raster Rotatation" by Alan W. Paeth. ShearRotateImage is adapted from a
|
|
|
% similar method based on the Paeth paper written by Michael Halle of the
|
|
|
% Spatial Imaging Group, MIT Media Lab.
|
|
|
%
|
|
|
% The format of the ShearRotateImage method is:
|
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|
%
|
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|
% Image *ShearRotateImage(const Image *image,const double degrees,
|
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|
% ExceptionInfo *exception)
|
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|
%
|
|
|
% A description of each parameter follows.
|
|
|
%
|
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|
% o image: the image.
|
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|
%
|
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|
% o degrees: Specifies the number of degrees to rotate the image.
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%
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% o exception: return any errors or warnings in this structure.
|
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|
%
|
|
|
*/
|
|
|
MagickExport Image *ShearRotateImage(const Image *image,const double degrees,
|
|
|
ExceptionInfo *exception)
|
|
|
{
|
|
|
Image
|
|
|
*integral_image,
|
|
|
*rotate_image;
|
|
|
|
|
|
MagickBooleanType
|
|
|
status;
|
|
|
|
|
|
MagickRealType
|
|
|
angle;
|
|
|
|
|
|
PointInfo
|
|
|
shear;
|
|
|
|
|
|
RectangleInfo
|
|
|
border_info,
|
|
|
bounds;
|
|
|
|
|
|
size_t
|
|
|
height,
|
|
|
rotations,
|
|
|
shear_width,
|
|
|
width;
|
|
|
|
|
|
/*
|
|
|
Adjust rotation angle.
|
|
|
*/
|
|
|
assert(image != (Image *) NULL);
|
|
|
assert(image->signature == MagickCoreSignature);
|
|
|
if (image->debug != MagickFalse)
|
|
|
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
|
|
|
assert(exception != (ExceptionInfo *) NULL);
|
|
|
assert(exception->signature == MagickCoreSignature);
|
|
|
angle=fmod(degrees,360.0);
|
|
|
if (angle < -45.0)
|
|
|
angle+=360.0;
|
|
|
for (rotations=0; angle > 45.0; rotations++)
|
|
|
angle-=90.0;
|
|
|
rotations%=4;
|
|
|
/*
|
|
|
Calculate shear equations.
|
|
|
*/
|
|
|
integral_image=IntegralRotateImage(image,rotations,exception);
|
|
|
if (integral_image == (Image *) NULL)
|
|
|
ThrowImageException(ResourceLimitError,"MemoryAllocationFailed");
|
|
|
shear.x=(-tan((double) DegreesToRadians(angle)/2.0));
|
|
|
shear.y=sin((double) DegreesToRadians(angle));
|
|
|
if ((shear.x == 0.0) && (shear.y == 0.0))
|
|
|
return(integral_image);
|
|
|
if (SetImageStorageClass(integral_image,DirectClass,exception) == MagickFalse)
|
|
|
{
|
|
|
integral_image=DestroyImage(integral_image);
|
|
|
return(integral_image);
|
|
|
}
|
|
|
if (integral_image->alpha_trait == UndefinedPixelTrait)
|
|
|
(void) SetImageAlphaChannel(integral_image,OpaqueAlphaChannel,exception);
|
|
|
/*
|
|
|
Compute maximum bounds for 3 shear operations.
|
|
|
*/
|
|
|
width=integral_image->columns;
|
|
|
height=integral_image->rows;
|
|
|
bounds.width=(size_t) floor(fabs((double) height*shear.x)+width+0.5);
|
|
|
bounds.height=(size_t) floor(fabs((double) bounds.width*shear.y)+height+0.5);
|
|
|
shear_width=(size_t) floor(fabs((double) bounds.height*shear.x)+
|
|
|
bounds.width+0.5);
|
|
|
bounds.x=CastDoubleToLong(floor((double) ((shear_width > bounds.width) ?
|
|
|
width : bounds.width-shear_width+2)/2.0+0.5));
|
|
|
bounds.y=CastDoubleToLong(floor(((double) bounds.height-height+2)/2.0+0.5));
|
|
|
/*
|
|
|
Surround image with a border.
|
|
|
*/
|
|
|
integral_image->border_color=integral_image->background_color;
|
|
|
integral_image->compose=CopyCompositeOp;
|
|
|
border_info.width=(size_t) bounds.x;
|
|
|
border_info.height=(size_t) bounds.y;
|
|
|
rotate_image=BorderImage(integral_image,&border_info,image->compose,
|
|
|
exception);
|
|
|
integral_image=DestroyImage(integral_image);
|
|
|
if (rotate_image == (Image *) NULL)
|
|
|
ThrowImageException(ResourceLimitError,"MemoryAllocationFailed");
|
|
|
/*
|
|
|
Rotate the image.
|
|
|
*/
|
|
|
status=XShearImage(rotate_image,shear.x,width,height,bounds.x,(ssize_t)
|
|
|
(rotate_image->rows-height)/2,exception);
|
|
|
if (status == MagickFalse)
|
|
|
{
|
|
|
rotate_image=DestroyImage(rotate_image);
|
|
|
return((Image *) NULL);
|
|
|
}
|
|
|
status=YShearImage(rotate_image,shear.y,bounds.width,height,(ssize_t)
|
|
|
(rotate_image->columns-bounds.width)/2,bounds.y,exception);
|
|
|
if (status == MagickFalse)
|
|
|
{
|
|
|
rotate_image=DestroyImage(rotate_image);
|
|
|
return((Image *) NULL);
|
|
|
}
|
|
|
status=XShearImage(rotate_image,shear.x,bounds.width,bounds.height,(ssize_t)
|
|
|
(rotate_image->columns-bounds.width)/2,(ssize_t) (rotate_image->rows-
|
|
|
bounds.height)/2,exception);
|
|
|
if (status == MagickFalse)
|
|
|
{
|
|
|
rotate_image=DestroyImage(rotate_image);
|
|
|
return((Image *) NULL);
|
|
|
}
|
|
|
status=CropToFitImage(&rotate_image,shear.x,shear.y,(MagickRealType) width,
|
|
|
(MagickRealType) height,MagickTrue,exception);
|
|
|
rotate_image->alpha_trait=image->alpha_trait;
|
|
|
rotate_image->compose=image->compose;
|
|
|
rotate_image->page.width=0;
|
|
|
rotate_image->page.height=0;
|
|
|
if (status == MagickFalse)
|
|
|
rotate_image=DestroyImage(rotate_image);
|
|
|
return(rotate_image);
|
|
|
}
|
