% MagickCore Image Comparison Methods %
% %
% Software Design %
-% Cristy %
+% Cristy %
% December 2003 %
% %
% %
-% Copyright 1999-2014 ImageMagick Studio LLC, a non-profit organization %
+% Copyright 1999-2017 ImageMagick Studio LLC, a non-profit organization %
% dedicated to making software imaging solutions freely available. %
% %
% You may not use this file except in compliance with the License. You may %
% o exception: return any errors or warnings in this structure.
%
*/
+
+static size_t GetImageChannels(const Image *image)
+{
+ register ssize_t
+ i;
+
+ size_t
+ channels;
+
+ channels=0;
+ for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
+ {
+ PixelChannel channel=GetPixelChannelChannel(image,i);
+ PixelTrait traits=GetPixelChannelTraits(image,channel);
+ if ((traits & UpdatePixelTrait) != 0)
+ channels++;
+ }
+ return(channels == 0 ? (size_t) 1 : channels);
+}
+
MagickExport Image *CompareImages(Image *image,const Image *reconstruct_image,
const MetricType metric,double *distortion,ExceptionInfo *exception)
{
*image_view,
*reconstruct_view;
+ double
+ fuzz;
+
const char
*artifact;
Image
+ *clone_image,
*difference_image,
*highlight_image;
PixelInfo
highlight,
- lowlight;
+ lowlight,
+ masklight;
+
+ RectangleInfo
+ geometry;
+
+ size_t
+ columns,
+ rows;
ssize_t
y;
assert(image != (Image *) NULL);
- assert(image->signature == MagickSignature);
+ assert(image->signature == MagickCoreSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
assert(reconstruct_image != (const Image *) NULL);
- assert(reconstruct_image->signature == MagickSignature);
+ assert(reconstruct_image->signature == MagickCoreSignature);
assert(distortion != (double *) NULL);
*distortion=0.0;
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
- if (metric != PerceptualHashErrorMetric)
- if ((reconstruct_image->columns != image->columns) ||
- (reconstruct_image->rows != image->rows))
- ThrowImageException(ImageError,"ImageSizeDiffers");
status=GetImageDistortion(image,reconstruct_image,metric,distortion,
exception);
if (status == MagickFalse)
return((Image *) NULL);
- difference_image=CloneImage(image,0,0,MagickTrue,exception);
+ columns=MagickMax(image->columns,reconstruct_image->columns);
+ rows=MagickMax(image->rows,reconstruct_image->rows);
+ SetGeometry(image,&geometry);
+ geometry.width=columns;
+ geometry.height=rows;
+ clone_image=CloneImage(image,0,0,MagickTrue,exception);
+ if (clone_image == (Image *) NULL)
+ return((Image *) NULL);
+ (void) SetImageMask(clone_image,ReadPixelMask,(Image *) NULL,exception);
+ difference_image=ExtentImage(clone_image,&geometry,exception);
+ clone_image=DestroyImage(clone_image);
if (difference_image == (Image *) NULL)
return((Image *) NULL);
(void) SetImageAlphaChannel(difference_image,OpaqueAlphaChannel,exception);
- highlight_image=CloneImage(image,image->columns,image->rows,MagickTrue,
- exception);
+ highlight_image=CloneImage(image,columns,rows,MagickTrue,exception);
if (highlight_image == (Image *) NULL)
{
difference_image=DestroyImage(difference_image);
return((Image *) NULL);
}
+ (void) SetImageMask(highlight_image,ReadPixelMask,(Image *) NULL,exception);
status=SetImageStorageClass(highlight_image,DirectClass,exception);
if (status == MagickFalse)
{
artifact=GetImageArtifact(image,"lowlight-color");
if (artifact != (const char *) NULL)
(void) QueryColorCompliance(artifact,AllCompliance,&lowlight,exception);
+ (void) QueryColorCompliance("#888888cc",AllCompliance,&masklight,exception);
+ artifact=GetImageArtifact(image,"masklight-color");
+ if (artifact != (const char *) NULL)
+ (void) QueryColorCompliance(artifact,AllCompliance,&masklight,exception);
/*
Generate difference image.
*/
status=MagickTrue;
+ fuzz=GetFuzzyColorDistance(image,reconstruct_image);
image_view=AcquireVirtualCacheView(image,exception);
reconstruct_view=AcquireVirtualCacheView(reconstruct_image,exception);
highlight_view=AcquireAuthenticCacheView(highlight_image,exception);
#if defined(MAGICKCORE_OPENMP_SUPPORT)
#pragma omp parallel for schedule(static,4) shared(status) \
- magick_threads(image,highlight_image,image->rows,1)
+ magick_threads(image,highlight_image,rows,1)
#endif
- for (y=0; y < (ssize_t) image->rows; y++)
+ for (y=0; y < (ssize_t) rows; y++)
{
MagickBooleanType
sync;
register const Quantum
- *restrict p,
- *restrict q;
+ *magick_restrict p,
+ *magick_restrict q;
register Quantum
- *restrict r;
+ *magick_restrict r;
register ssize_t
x;
if (status == MagickFalse)
continue;
- p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
- q=GetCacheViewVirtualPixels(reconstruct_view,0,y,image->columns,1,
- exception);
- r=QueueCacheViewAuthenticPixels(highlight_view,0,y,highlight_image->columns,
- 1,exception);
+ p=GetCacheViewVirtualPixels(image_view,0,y,columns,1,exception);
+ q=GetCacheViewVirtualPixels(reconstruct_view,0,y,columns,1,exception);
+ r=QueueCacheViewAuthenticPixels(highlight_view,0,y,columns,1,exception);
if ((p == (const Quantum *) NULL) || (q == (const Quantum *) NULL) ||
(r == (Quantum *) NULL))
{
status=MagickFalse;
continue;
}
- for (x=0; x < (ssize_t) image->columns; x++)
+ for (x=0; x < (ssize_t) columns; x++)
{
double
Da,
register ssize_t
i;
- if (GetPixelReadMask(image,p) == 0)
+ if ((GetPixelReadMask(image,p) == 0) ||
+ (GetPixelReadMask(reconstruct_image,q) == 0))
{
- SetPixelInfoPixel(highlight_image,&lowlight,r);
+ SetPixelViaPixelInfo(highlight_image,&masklight,r);
p+=GetPixelChannels(image);
q+=GetPixelChannels(reconstruct_image);
r+=GetPixelChannels(highlight_image);
((reconstruct_traits & UpdatePixelTrait) == 0))
continue;
distance=Sa*p[i]-Da*GetPixelChannel(reconstruct_image,channel,q);
- if (fabs((double) distance) >= MagickEpsilon)
- difference=MagickTrue;
+ if ((distance*distance) > fuzz)
+ {
+ difference=MagickTrue;
+ break;
+ }
}
if (difference == MagickFalse)
- SetPixelInfoPixel(highlight_image,&lowlight,r);
+ SetPixelViaPixelInfo(highlight_image,&lowlight,r);
else
- SetPixelInfoPixel(highlight_image,&highlight,r);
+ SetPixelViaPixelInfo(highlight_image,&highlight,r);
p+=GetPixelChannels(image);
q+=GetPixelChannels(reconstruct_image);
r+=GetPixelChannels(highlight_image);
image_view=DestroyCacheView(image_view);
(void) CompositeImage(difference_image,highlight_image,image->compose,
MagickTrue,0,0,exception);
+ (void) SetImageAlphaChannel(difference_image,OffAlphaChannel,exception);
highlight_image=DestroyImage(highlight_image);
if (status == MagickFalse)
difference_image=DestroyImage(difference_image);
%
*/
-static inline double MagickMax(const double x,const double y)
-{
- if (x > y)
- return(x);
- return(y);
-}
-
static MagickBooleanType GetAbsoluteDistortion(const Image *image,
const Image *reconstruct_image,double *distortion,ExceptionInfo *exception)
{
MagickBooleanType
status;
+ size_t
+ columns,
+ rows;
+
ssize_t
y;
Compute the absolute difference in pixels between two images.
*/
status=MagickTrue;
- if (image->fuzz == 0.0)
- fuzz=MagickMax(reconstruct_image->fuzz,MagickSQ1_2)*
- MagickMax(reconstruct_image->fuzz,MagickSQ1_2);
- else
- if (reconstruct_image->fuzz == 0.0)
- fuzz=MagickMax(image->fuzz,MagickSQ1_2)*
- MagickMax(image->fuzz,MagickSQ1_2);
- else
- fuzz=MagickMax(image->fuzz,MagickSQ1_2)*
- MagickMax(reconstruct_image->fuzz,MagickSQ1_2);
+ fuzz=GetFuzzyColorDistance(image,reconstruct_image);
+ rows=MagickMax(image->rows,reconstruct_image->rows);
+ columns=MagickMax(image->columns,reconstruct_image->columns);
image_view=AcquireVirtualCacheView(image,exception);
reconstruct_view=AcquireVirtualCacheView(reconstruct_image,exception);
#if defined(MAGICKCORE_OPENMP_SUPPORT)
#pragma omp parallel for schedule(static,4) shared(status) \
- magick_threads(image,image,image->rows,1)
+ magick_threads(image,image,rows,1)
#endif
- for (y=0; y < (ssize_t) image->rows; y++)
+ for (y=0; y < (ssize_t) rows; y++)
{
double
channel_distortion[MaxPixelChannels+1];
register const Quantum
- *restrict p,
- *restrict q;
+ *magick_restrict p,
+ *magick_restrict q;
register ssize_t
- i,
+ j,
x;
if (status == MagickFalse)
continue;
- p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
- q=GetCacheViewVirtualPixels(reconstruct_view,0,y,reconstruct_image->columns,
- 1,exception);
+ p=GetCacheViewVirtualPixels(image_view,0,y,columns,1,exception);
+ q=GetCacheViewVirtualPixels(reconstruct_view,0,y,columns,1,exception);
if ((p == (const Quantum *) NULL) || (q == (const Quantum *) NULL))
{
status=MagickFalse;
continue;
}
(void) ResetMagickMemory(channel_distortion,0,sizeof(channel_distortion));
- for (x=0; x < (ssize_t) image->columns; x++)
+ for (x=0; x < (ssize_t) columns; x++)
{
double
Da,
register ssize_t
i;
- if (GetPixelReadMask(image,p) == 0)
+ if (GetPixelWriteMask(image,p) == 0)
{
p+=GetPixelChannels(image);
q+=GetPixelChannels(reconstruct_image);
distance=Sa*p[i]-Da*GetPixelChannel(reconstruct_image,channel,q);
if ((distance*distance) > fuzz)
{
+ channel_distortion[i]++;
difference=MagickTrue;
- break;
}
}
if (difference != MagickFalse)
- {
- channel_distortion[i]++;
- channel_distortion[CompositePixelChannel]++;
- }
+ channel_distortion[CompositePixelChannel]++;
p+=GetPixelChannels(image);
q+=GetPixelChannels(reconstruct_image);
}
#if defined(MAGICKCORE_OPENMP_SUPPORT)
#pragma omp critical (MagickCore_GetAbsoluteError)
#endif
- for (i=0; i <= MaxPixelChannels; i++)
- distortion[i]+=channel_distortion[i];
+ for (j=0; j <= MaxPixelChannels; j++)
+ distortion[j]+=channel_distortion[j];
}
reconstruct_view=DestroyCacheView(reconstruct_view);
image_view=DestroyCacheView(image_view);
return(status);
}
-static size_t GetImageChannels(const Image *image)
-{
- register ssize_t
- i;
-
- size_t
- channels;
-
- channels=0;
- for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
- {
- PixelChannel channel=GetPixelChannelChannel(image,i);
- PixelTrait traits=GetPixelChannelTraits(image,channel);
- if ((traits & UpdatePixelTrait) != 0)
- channels++;
- }
- return(channels);
-}
-
static MagickBooleanType GetFuzzDistortion(const Image *image,
const Image *reconstruct_image,double *distortion,ExceptionInfo *exception)
{
*image_view,
*reconstruct_view;
+ double
+ area;
+
MagickBooleanType
status;
register ssize_t
- i;
+ j;
+
+ size_t
+ columns,
+ rows;
ssize_t
y;
status=MagickTrue;
+ rows=MagickMax(image->rows,reconstruct_image->rows);
+ columns=MagickMax(image->columns,reconstruct_image->columns);
+ area=0.0;
image_view=AcquireVirtualCacheView(image,exception);
reconstruct_view=AcquireVirtualCacheView(reconstruct_image,exception);
#if defined(MAGICKCORE_OPENMP_SUPPORT)
#pragma omp parallel for schedule(static,4) shared(status) \
- magick_threads(image,image,image->rows,1)
+ magick_threads(image,image,rows,1)
#endif
- for (y=0; y < (ssize_t) image->rows; y++)
+ for (y=0; y < (ssize_t) rows; y++)
{
double
channel_distortion[MaxPixelChannels+1];
register const Quantum
- *restrict p,
- *restrict q;
+ *magick_restrict p,
+ *magick_restrict q;
register ssize_t
- i,
x;
if (status == MagickFalse)
continue;
- p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
- q=GetCacheViewVirtualPixels(reconstruct_view,0,y,reconstruct_image->columns,
- 1,exception);
+ p=GetCacheViewVirtualPixels(image_view,0,y,columns,1,exception);
+ q=GetCacheViewVirtualPixels(reconstruct_view,0,y,columns,1,exception);
if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
{
status=MagickFalse;
continue;
}
(void) ResetMagickMemory(channel_distortion,0,sizeof(channel_distortion));
- for (x=0; x < (ssize_t) image->columns; x++)
+ for (x=0; x < (ssize_t) columns; x++)
{
double
Da,
register ssize_t
i;
- if (GetPixelReadMask(image,p) == 0)
+ if ((GetPixelReadMask(image,p) == 0) ||
+ (GetPixelReadMask(reconstruct_image,q) == 0))
{
p+=GetPixelChannels(image);
q+=GetPixelChannels(reconstruct_image);
channel_distortion[i]+=distance*distance;
channel_distortion[CompositePixelChannel]+=distance*distance;
}
+ area++;
p+=GetPixelChannels(image);
q+=GetPixelChannels(reconstruct_image);
}
#if defined(MAGICKCORE_OPENMP_SUPPORT)
#pragma omp critical (MagickCore_GetFuzzDistortion)
#endif
- for (i=0; i <= MaxPixelChannels; i++)
- distortion[i]+=channel_distortion[i];
+ for (j=0; j <= MaxPixelChannels; j++)
+ distortion[j]+=channel_distortion[j];
}
reconstruct_view=DestroyCacheView(reconstruct_view);
image_view=DestroyCacheView(image_view);
- for (i=0; i <= MaxPixelChannels; i++)
- distortion[i]/=((double) image->columns*image->rows);
+ area=PerceptibleReciprocal(area);
+ for (j=0; j <= MaxPixelChannels; j++)
+ distortion[j]*=area;
distortion[CompositePixelChannel]/=(double) GetImageChannels(image);
distortion[CompositePixelChannel]=sqrt(distortion[CompositePixelChannel]);
return(status);
*image_view,
*reconstruct_view;
+ double
+ area;
+
MagickBooleanType
status;
register ssize_t
- i;
+ j;
+
+ size_t
+ columns,
+ rows;
ssize_t
y;
status=MagickTrue;
+ rows=MagickMax(image->rows,reconstruct_image->rows);
+ columns=MagickMax(image->columns,reconstruct_image->columns);
+ area=0.0;
image_view=AcquireVirtualCacheView(image,exception);
reconstruct_view=AcquireVirtualCacheView(reconstruct_image,exception);
#if defined(MAGICKCORE_OPENMP_SUPPORT)
#pragma omp parallel for schedule(static,4) shared(status) \
- magick_threads(image,image,image->rows,1)
+ magick_threads(image,image,rows,1)
#endif
- for (y=0; y < (ssize_t) image->rows; y++)
+ for (y=0; y < (ssize_t) rows; y++)
{
double
channel_distortion[MaxPixelChannels+1];
register const Quantum
- *restrict p,
- *restrict q;
+ *magick_restrict p,
+ *magick_restrict q;
register ssize_t
- i,
x;
if (status == MagickFalse)
continue;
- p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
- q=GetCacheViewVirtualPixels(reconstruct_view,0,y,reconstruct_image->columns,
- 1,exception);
+ p=GetCacheViewVirtualPixels(image_view,0,y,columns,1,exception);
+ q=GetCacheViewVirtualPixels(reconstruct_view,0,y,columns,1,exception);
if ((p == (const Quantum *) NULL) || (q == (const Quantum *) NULL))
{
status=MagickFalse;
continue;
}
(void) ResetMagickMemory(channel_distortion,0,sizeof(channel_distortion));
- for (x=0; x < (ssize_t) image->columns; x++)
+ for (x=0; x < (ssize_t) columns; x++)
{
double
Da,
register ssize_t
i;
- if (GetPixelReadMask(image,p) == 0)
+ if ((GetPixelReadMask(image,p) == 0) ||
+ (GetPixelReadMask(reconstruct_image,q) == 0))
{
p+=GetPixelChannels(image);
q+=GetPixelChannels(reconstruct_image);
channel_distortion[i]+=distance;
channel_distortion[CompositePixelChannel]+=distance;
}
+ area++;
p+=GetPixelChannels(image);
q+=GetPixelChannels(reconstruct_image);
}
#if defined(MAGICKCORE_OPENMP_SUPPORT)
#pragma omp critical (MagickCore_GetMeanAbsoluteError)
#endif
- for (i=0; i <= MaxPixelChannels; i++)
- distortion[i]+=channel_distortion[i];
+ for (j=0; j <= MaxPixelChannels; j++)
+ distortion[j]+=channel_distortion[j];
}
reconstruct_view=DestroyCacheView(reconstruct_view);
image_view=DestroyCacheView(image_view);
- for (i=0; i <= MaxPixelChannels; i++)
- distortion[i]/=((double) image->columns*image->rows);
+ area=PerceptibleReciprocal(area);
+ for (j=0; j <= MaxPixelChannels; j++)
+ distortion[j]*=area;
distortion[CompositePixelChannel]/=(double) GetImageChannels(image);
return(status);
}
maximum_error,
mean_error;
+ size_t
+ columns,
+ rows;
+
ssize_t
y;
area=0.0;
maximum_error=0.0;
mean_error=0.0;
+ rows=MagickMax(image->rows,reconstruct_image->rows);
+ columns=MagickMax(image->columns,reconstruct_image->columns);
image_view=AcquireVirtualCacheView(image,exception);
reconstruct_view=AcquireVirtualCacheView(reconstruct_image,exception);
- for (y=0; y < (ssize_t) image->rows; y++)
+ for (y=0; y < (ssize_t) rows; y++)
{
register const Quantum
- *restrict p,
- *restrict q;
+ *magick_restrict p,
+ *magick_restrict q;
register ssize_t
x;
- p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
- q=GetCacheViewVirtualPixels(reconstruct_view,0,y,reconstruct_image->columns,
- 1,exception);
+ p=GetCacheViewVirtualPixels(image_view,0,y,columns,1,exception);
+ q=GetCacheViewVirtualPixels(reconstruct_view,0,y,columns,1,exception);
if ((p == (const Quantum *) NULL) || (q == (const Quantum *) NULL))
{
status=MagickFalse;
break;
}
- for (x=0; x < (ssize_t) image->columns; x++)
+ for (x=0; x < (ssize_t) columns; x++)
{
double
Da,
register ssize_t
i;
- if (GetPixelReadMask(image,p) == 0)
+ if ((GetPixelReadMask(image,p) == 0) ||
+ (GetPixelReadMask(reconstruct_image,q) == 0))
{
p+=GetPixelChannels(image);
q+=GetPixelChannels(reconstruct_image);
(reconstruct_traits == UndefinedPixelTrait) ||
((reconstruct_traits & UpdatePixelTrait) == 0))
continue;
- distance=fabs((double) (Sa*p[i]-Da*GetPixelChannel(reconstruct_image,
- channel,q)));
+ distance=fabs(Sa*p[i]-Da*GetPixelChannel(reconstruct_image,channel,q));
distortion[i]+=distance;
distortion[CompositePixelChannel]+=distance;
mean_error+=distance*distance;
*image_view,
*reconstruct_view;
+ double
+ area;
+
MagickBooleanType
status;
register ssize_t
- i;
+ j;
+
+ size_t
+ columns,
+ rows;
ssize_t
y;
status=MagickTrue;
+ rows=MagickMax(image->rows,reconstruct_image->rows);
+ columns=MagickMax(image->columns,reconstruct_image->columns);
+ area=0.0;
image_view=AcquireVirtualCacheView(image,exception);
reconstruct_view=AcquireVirtualCacheView(reconstruct_image,exception);
#if defined(MAGICKCORE_OPENMP_SUPPORT)
#pragma omp parallel for schedule(static,4) shared(status) \
- magick_threads(image,image,image->rows,1)
+ magick_threads(image,image,rows,1)
#endif
- for (y=0; y < (ssize_t) image->rows; y++)
+ for (y=0; y < (ssize_t) rows; y++)
{
double
channel_distortion[MaxPixelChannels+1];
register const Quantum
- *restrict p,
- *restrict q;
+ *magick_restrict p,
+ *magick_restrict q;
register ssize_t
- i,
x;
if (status == MagickFalse)
continue;
- p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
- q=GetCacheViewVirtualPixels(reconstruct_view,0,y,reconstruct_image->columns,
- 1,exception);
+ p=GetCacheViewVirtualPixels(image_view,0,y,columns,1,exception);
+ q=GetCacheViewVirtualPixels(reconstruct_view,0,y,columns,1,exception);
if ((p == (const Quantum *) NULL) || (q == (const Quantum *) NULL))
{
status=MagickFalse;
continue;
}
(void) ResetMagickMemory(channel_distortion,0,sizeof(channel_distortion));
- for (x=0; x < (ssize_t) image->columns; x++)
+ for (x=0; x < (ssize_t) columns; x++)
{
double
Da,
register ssize_t
i;
- if (GetPixelReadMask(image,p) == 0)
+ if ((GetPixelReadMask(image,p) == 0) ||
+ (GetPixelReadMask(reconstruct_image,q) == 0))
{
p+=GetPixelChannels(image);
q+=GetPixelChannels(reconstruct_image);
channel_distortion[i]+=distance*distance;
channel_distortion[CompositePixelChannel]+=distance*distance;
}
+ area++;
p+=GetPixelChannels(image);
q+=GetPixelChannels(reconstruct_image);
}
#if defined(MAGICKCORE_OPENMP_SUPPORT)
#pragma omp critical (MagickCore_GetMeanSquaredError)
#endif
- for (i=0; i <= MaxPixelChannels; i++)
- distortion[i]+=channel_distortion[i];
+ for (j=0; j <= MaxPixelChannels; j++)
+ distortion[j]+=channel_distortion[j];
}
reconstruct_view=DestroyCacheView(reconstruct_view);
image_view=DestroyCacheView(image_view);
- for (i=0; i <= MaxPixelChannels; i++)
- distortion[i]/=((double) image->columns*image->rows);
+ area=PerceptibleReciprocal(area);
+ for (j=0; j <= MaxPixelChannels; j++)
+ distortion[j]*=area;
distortion[CompositePixelChannel]/=GetImageChannels(image);
return(status);
}
register ssize_t
i;
+ size_t
+ columns,
+ rows;
+
ssize_t
y;
progress=0;
for (i=0; i <= MaxPixelChannels; i++)
distortion[i]=0.0;
- area=1.0/((double) image->columns*image->rows);
+ rows=MagickMax(image->rows,reconstruct_image->rows);
+ columns=MagickMax(image->columns,reconstruct_image->columns);
+ area=0.0;
image_view=AcquireVirtualCacheView(image,exception);
reconstruct_view=AcquireVirtualCacheView(reconstruct_image,exception);
- for (y=0; y < (ssize_t) image->rows; y++)
+ for (y=0; y < (ssize_t) rows; y++)
{
register const Quantum
- *restrict p,
- *restrict q;
+ *magick_restrict p,
+ *magick_restrict q;
register ssize_t
x;
- if (status == MagickFalse)
- continue;
- p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
- q=GetCacheViewVirtualPixels(reconstruct_view,0,y,reconstruct_image->columns,
- 1,exception);
+ p=GetCacheViewVirtualPixels(image_view,0,y,columns,1,exception);
+ q=GetCacheViewVirtualPixels(reconstruct_view,0,y,columns,1,exception);
if ((p == (const Quantum *) NULL) || (q == (const Quantum *) NULL))
{
status=MagickFalse;
- continue;
+ break;
+ }
+ for (x=0; x < (ssize_t) columns; x++)
+ {
+ if ((GetPixelReadMask(image,p) == 0) ||
+ (GetPixelReadMask(reconstruct_image,q) == 0))
+ {
+ p+=GetPixelChannels(image);
+ q+=GetPixelChannels(reconstruct_image);
+ continue;
+ }
+ area++;
+ p+=GetPixelChannels(image);
+ q+=GetPixelChannels(reconstruct_image);
+ }
+ }
+ area=PerceptibleReciprocal(area);
+ for (y=0; y < (ssize_t) rows; y++)
+ {
+ register const Quantum
+ *magick_restrict p,
+ *magick_restrict q;
+
+ register ssize_t
+ x;
+
+ p=GetCacheViewVirtualPixels(image_view,0,y,columns,1,exception);
+ q=GetCacheViewVirtualPixels(reconstruct_view,0,y,columns,1,exception);
+ if ((p == (const Quantum *) NULL) || (q == (const Quantum *) NULL))
+ {
+ status=MagickFalse;
+ break;
}
- for (x=0; x < (ssize_t) image->columns; x++)
+ for (x=0; x < (ssize_t) columns; x++)
{
double
Da,
Sa;
- register ssize_t
- i;
-
- if (GetPixelReadMask(image,p) == 0)
+ if ((GetPixelReadMask(image,p) == 0) ||
+ (GetPixelReadMask(reconstruct_image,q) == 0))
{
p+=GetPixelChannels(image);
q+=GetPixelChannels(reconstruct_image);
continue;
}
- Sa=QuantumScale*GetPixelAlpha(image,p);
- Da=QuantumScale*GetPixelAlpha(reconstruct_image,q);
+ Sa=QuantumScale*(image->alpha_trait != UndefinedPixelTrait ?
+ GetPixelAlpha(image,p) : OpaqueAlpha);
+ Da=QuantumScale*(reconstruct_image->alpha_trait != UndefinedPixelTrait ?
+ GetPixelAlpha(reconstruct_image,q) : OpaqueAlpha);
for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
{
PixelChannel channel=GetPixelChannelChannel(image,i);
(reconstruct_traits == UndefinedPixelTrait) ||
((reconstruct_traits & UpdatePixelTrait) == 0))
continue;
- distortion[i]+=area*QuantumScale*(Sa*p[i]-image_statistics[i].mean)*
- (Da*GetPixelChannel(reconstruct_image,channel,q)-
- reconstruct_statistics[channel].mean);
+ if (channel == AlphaPixelChannel)
+ {
+ distortion[i]+=area*QuantumScale*(p[i]-
+ image_statistics[channel].mean)*(GetPixelChannel(
+ reconstruct_image,channel,q)-
+ reconstruct_statistics[channel].mean);
+ }
+ else
+ {
+ distortion[i]+=area*QuantumScale*(Sa*p[i]-
+ image_statistics[channel].mean)*(Da*GetPixelChannel(
+ reconstruct_image,channel,q)-
+ reconstruct_statistics[channel].mean);
+ }
}
p+=GetPixelChannels(image);
q+=GetPixelChannels(reconstruct_image);
MagickBooleanType
proceed;
- proceed=SetImageProgress(image,SimilarityImageTag,progress++,
- image->rows);
+ proceed=SetImageProgress(image,SimilarityImageTag,progress++,rows);
if (proceed == MagickFalse)
- status=MagickFalse;
+ {
+ status=MagickFalse;
+ break;
+ }
}
}
reconstruct_view=DestroyCacheView(reconstruct_view);
Divide by the standard deviation.
*/
distortion[CompositePixelChannel]=0.0;
- for (i=0; i < MaxPixelChannels; i++)
+ for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
{
double
gamma;
PixelChannel channel=GetPixelChannelChannel(image,i);
- gamma=image_statistics[i].standard_deviation*
+ gamma=image_statistics[channel].standard_deviation*
reconstruct_statistics[channel].standard_deviation;
gamma=PerceptibleReciprocal(gamma);
distortion[i]=QuantumRange*gamma*distortion[i];
MagickBooleanType
status;
+ size_t
+ columns,
+ rows;
+
ssize_t
y;
status=MagickTrue;
+ rows=MagickMax(image->rows,reconstruct_image->rows);
+ columns=MagickMax(image->columns,reconstruct_image->columns);
image_view=AcquireVirtualCacheView(image,exception);
reconstruct_view=AcquireVirtualCacheView(reconstruct_image,exception);
#if defined(MAGICKCORE_OPENMP_SUPPORT)
#pragma omp parallel for schedule(static,4) shared(status) \
- magick_threads(image,image,image->rows,1)
+ magick_threads(image,image,rows,1)
#endif
- for (y=0; y < (ssize_t) image->rows; y++)
+ for (y=0; y < (ssize_t) rows; y++)
{
double
channel_distortion[MaxPixelChannels+1];
register const Quantum
- *restrict p,
- *restrict q;
+ *magick_restrict p,
+ *magick_restrict q;
register ssize_t
- i,
+ j,
x;
if (status == MagickFalse)
continue;
- p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
- q=GetCacheViewVirtualPixels(reconstruct_view,0,y,reconstruct_image->columns,
- 1,exception);
+ p=GetCacheViewVirtualPixels(image_view,0,y,columns,1,exception);
+ q=GetCacheViewVirtualPixels(reconstruct_view,0,y,columns,1,exception);
if ((p == (const Quantum *) NULL) || (q == (const Quantum *) NULL))
{
status=MagickFalse;
continue;
}
(void) ResetMagickMemory(channel_distortion,0,sizeof(channel_distortion));
- for (x=0; x < (ssize_t) image->columns; x++)
+ for (x=0; x < (ssize_t) columns; x++)
{
double
Da,
register ssize_t
i;
- if (GetPixelReadMask(image,p) == 0)
+ if ((GetPixelReadMask(image,p) == 0) ||
+ (GetPixelReadMask(reconstruct_image,q) == 0))
{
p+=GetPixelChannels(image);
q+=GetPixelChannels(reconstruct_image);
#if defined(MAGICKCORE_OPENMP_SUPPORT)
#pragma omp critical (MagickCore_GetPeakAbsoluteError)
#endif
- for (i=0; i <= MaxPixelChannels; i++)
- if (channel_distortion[i] > distortion[i])
- distortion[i]=channel_distortion[i];
+ for (j=0; j <= MaxPixelChannels; j++)
+ if (channel_distortion[j] > distortion[j])
+ distortion[j]=channel_distortion[j];
}
reconstruct_view=DestroyCacheView(reconstruct_view);
image_view=DestroyCacheView(image_view);
static inline double MagickLog10(const double x)
{
-#define Log10Epsilon (1.0e-20)
+#define Log10Epsilon (1.0e-11)
- return(log10(fabs(x)+Log10Epsilon));
+ if (fabs(x) < Log10Epsilon)
+ return(log10(Log10Epsilon));
+ return(log10(fabs(x)));
}
static MagickBooleanType GetPeakSignalToNoiseRatio(const Image *image,
status=GetMeanSquaredDistortion(image,reconstruct_image,distortion,exception);
for (i=0; i <= MaxPixelChannels; i++)
- distortion[i]=20.0*MagickLog10((double) 1.0/sqrt(distortion[i]));
+ if (fabs(distortion[i]) >= MagickEpsilon)
+ distortion[i]=20.0*MagickLog10((double) 1.0/sqrt(distortion[i]));
return(status);
}
-static Image *PerceptualImageHash(const Image *image,
- const ColorspaceType colorspace,ExceptionInfo *exception)
-{
- Image
- *phash_image;
-
- MagickBooleanType
- status;
-
- /*
- Transform colorspace then blur perceptual hash image.
- */
- phash_image=BlurImage(image,0.0,1.0,exception);
- if (phash_image == (Image *) NULL)
- return((Image *) NULL);
- phash_image->depth=8;
- status=TransformImageColorspace(phash_image,colorspace,exception);
- if (status == MagickFalse)
- phash_image=DestroyImage(phash_image);
- return(phash_image);
-}
-
static MagickBooleanType GetPerceptualHashDistortion(const Image *image,
const Image *reconstruct_image,double *distortion,ExceptionInfo *exception)
{
- ChannelMoments
- *image_moments,
- *reconstruct_moments;
+ ChannelPerceptualHash
+ *channel_phash,
+ *reconstruct_phash;
- double
- alpha,
- beta,
- difference;
-
- Image
- *phash_image;
+ const char
+ *artifact;
MagickBooleanType
- grayscale;
+ normalize;
- register ssize_t
- i;
+ ssize_t
+ channel;
/*
- Compute perceptual hash in the native image colorspace.
+ Compute perceptual hash in the sRGB colorspace.
*/
- phash_image=PerceptualImageHash(image,image->colorspace,exception);
- if (phash_image == (Image *) NULL)
+ channel_phash=GetImagePerceptualHash(image,exception);
+ if (channel_phash == (ChannelPerceptualHash *) NULL)
return(MagickFalse);
- image_moments=GetImageMoments(phash_image,exception);
- phash_image=DestroyImage(phash_image);
- if (image_moments == (ChannelMoments *) NULL)
- return(MagickFalse);
- phash_image=PerceptualImageHash(reconstruct_image,
- reconstruct_image->colorspace,exception);
- if (phash_image == (Image *) NULL)
- {
- image_moments=(ChannelMoments *) RelinquishMagickMemory(image_moments);
- return(MagickFalse);
- }
- reconstruct_moments=GetImageMoments(phash_image,exception);
- phash_image=DestroyImage(phash_image);
- if (reconstruct_moments == (ChannelMoments *) NULL)
+ reconstruct_phash=GetImagePerceptualHash(reconstruct_image,exception);
+ if (reconstruct_phash == (ChannelPerceptualHash *) NULL)
{
- image_moments=(ChannelMoments *) RelinquishMagickMemory(image_moments);
+ channel_phash=(ChannelPerceptualHash *) RelinquishMagickMemory(
+ channel_phash);
return(MagickFalse);
}
- for (i=0; i < 7; i++)
+ artifact=GetImageArtifact(image,"phash:normalize");
+ normalize=(artifact == (const char *) NULL) ||
+ (IsStringTrue(artifact) == MagickFalse) ? MagickFalse : MagickTrue;
+#if defined(MAGICKCORE_OPENMP_SUPPORT)
+ #pragma omp parallel for schedule(static,4)
+#endif
+ for (channel=0; channel < MaxPixelChannels; channel++)
{
- ssize_t
- channel;
+ double
+ difference;
- /*
- Compute sum of moment differences squared.
- */
- for (channel=0; channel < MaxPixelChannels; channel++)
+ register ssize_t
+ i;
+
+ difference=0.0;
+ for (i=0; i < MaximumNumberOfImageMoments; i++)
{
- alpha=MagickLog10(image_moments[channel].I[i]);
- beta=MagickLog10(reconstruct_moments[channel].I[i]);
- difference=beta-alpha;
- distortion[channel]+=difference*difference;
- distortion[CompositePixelChannel]+=difference*difference;
+ double
+ alpha,
+ beta;
+
+ register ssize_t
+ j;
+
+ for (j=0; j < (ssize_t) channel_phash[0].number_colorspaces; j++)
+ {
+ alpha=channel_phash[channel].phash[j][i];
+ beta=reconstruct_phash[channel].phash[j][i];
+ if (normalize == MagickFalse)
+ difference+=(beta-alpha)*(beta-alpha);
+ else
+ difference=sqrt((beta-alpha)*(beta-alpha)/
+ channel_phash[0].number_channels);
+ }
}
+ distortion[channel]+=difference;
+#if defined(MAGICKCORE_OPENMP_SUPPORT)
+ #pragma omp critical (MagickCore_GetPerceptualHashDistortion)
+#endif
+ distortion[CompositePixelChannel]+=difference;
}
- image_moments=(ChannelMoments *) RelinquishMagickMemory(image_moments);
- reconstruct_moments=(ChannelMoments *) RelinquishMagickMemory(
- reconstruct_moments);
- grayscale=(IsImageGray(image,exception) != MagickFalse) &&
- (IsImageGray(reconstruct_image,exception) != MagickFalse) ? MagickTrue :
- MagickFalse;
- if (grayscale != MagickFalse)
- return(MagickTrue);
/*
- Compute perceptual hash in the HCLP colorspace.
+ Free resources.
*/
- phash_image=PerceptualImageHash(image,HCLpColorspace,exception);
- if (phash_image == (Image *) NULL)
- return(MagickFalse);
- image_moments=GetImageMoments(phash_image,exception);
- phash_image=DestroyImage(phash_image);
- if (image_moments == (ChannelMoments *) NULL)
- return(MagickFalse);
- phash_image=PerceptualImageHash(reconstruct_image,HCLpColorspace,exception);
- if (phash_image == (Image *) NULL)
- {
- image_moments=(ChannelMoments *) RelinquishMagickMemory(image_moments);
- return(MagickFalse);
- }
- reconstruct_moments=GetImageMoments(phash_image,exception);
- phash_image=DestroyImage(phash_image);
- if (reconstruct_moments == (ChannelMoments *) NULL)
- {
- image_moments=(ChannelMoments *) RelinquishMagickMemory(image_moments);
- return(MagickFalse);
- }
- for (i=0; i < 7; i++)
- {
- ssize_t
- channel;
-
- /*
- Compute sum of moment differences squared.
- */
- for (channel=0; channel < MaxPixelChannels; channel++)
- {
- alpha=MagickLog10(image_moments[channel].I[i]);
- beta=MagickLog10(reconstruct_moments[channel].I[i]);
- difference=beta-alpha;
- distortion[channel]+=difference*difference;
- distortion[CompositePixelChannel]+=difference*difference;
- }
- }
- image_moments=(ChannelMoments *) RelinquishMagickMemory(image_moments);
- reconstruct_moments=(ChannelMoments *) RelinquishMagickMemory(
- reconstruct_moments);
+ reconstruct_phash=(ChannelPerceptualHash *) RelinquishMagickMemory(
+ reconstruct_phash);
+ channel_phash=(ChannelPerceptualHash *) RelinquishMagickMemory(channel_phash);
return(MagickTrue);
}
-
static MagickBooleanType GetRootMeanSquaredDistortion(const Image *image,
const Image *reconstruct_image,double *distortion,ExceptionInfo *exception)
{
length;
assert(image != (Image *) NULL);
- assert(image->signature == MagickSignature);
+ assert(image->signature == MagickCoreSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
assert(reconstruct_image != (const Image *) NULL);
- assert(reconstruct_image->signature == MagickSignature);
+ assert(reconstruct_image->signature == MagickCoreSignature);
assert(distortion != (double *) NULL);
*distortion=0.0;
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
- if (metric != PerceptualHashErrorMetric)
- if ((reconstruct_image->columns != image->columns) ||
- (reconstruct_image->rows != image->rows))
- ThrowBinaryException(ImageError,"ImageSizeDiffers",image->filename);
/*
Get image distortion.
*/
length;
assert(image != (Image *) NULL);
- assert(image->signature == MagickSignature);
+ assert(image->signature == MagickCoreSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
assert(reconstruct_image != (const Image *) NULL);
- assert(reconstruct_image->signature == MagickSignature);
+ assert(reconstruct_image->signature == MagickCoreSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
- if (metric != PerceptualHashErrorMetric)
- if ((reconstruct_image->columns != image->columns) ||
- (reconstruct_image->rows != image->rows))
- {
- (void) ThrowMagickException(exception,GetMagickModule(),ImageError,
- "ImageSizeDiffers","`%s'",image->filename);
- return((double *) NULL);
- }
/*
Get image distortion.
*/
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
-% IsImagesEqual() measures the difference between colors at each pixel
+% IsImagesEqual() compare the pixels of two images and returns immediately
+% if any pixel is not identical.
+%
+% The format of the IsImagesEqual method is:
+%
+% MagickBooleanType IsImagesEqual(const Image *image,
+% const Image *reconstruct_image,ExceptionInfo *exception)
+%
+% A description of each parameter follows.
+%
+% o image: the image.
+%
+% o reconstruct_image: the reconstruct image.
+%
+% o exception: return any errors or warnings in this structure.
+%
+*/
+MagickExport MagickBooleanType IsImagesEqual(const Image *image,
+ const Image *reconstruct_image,ExceptionInfo *exception)
+{
+ CacheView
+ *image_view,
+ *reconstruct_view;
+
+ size_t
+ columns,
+ rows;
+
+ ssize_t
+ y;
+
+ assert(image != (Image *) NULL);
+ assert(image->signature == MagickCoreSignature);
+ assert(reconstruct_image != (const Image *) NULL);
+ assert(reconstruct_image->signature == MagickCoreSignature);
+ rows=MagickMax(image->rows,reconstruct_image->rows);
+ columns=MagickMax(image->columns,reconstruct_image->columns);
+ image_view=AcquireVirtualCacheView(image,exception);
+ reconstruct_view=AcquireVirtualCacheView(reconstruct_image,exception);
+ for (y=0; y < (ssize_t) rows; y++)
+ {
+ register const Quantum
+ *magick_restrict p,
+ *magick_restrict q;
+
+ register ssize_t
+ x;
+
+ p=GetCacheViewVirtualPixels(image_view,0,y,columns,1,exception);
+ q=GetCacheViewVirtualPixels(reconstruct_view,0,y,columns,1,exception);
+ if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
+ break;
+ for (x=0; x < (ssize_t) columns; x++)
+ {
+ register ssize_t
+ i;
+
+ if (GetPixelWriteMask(image,p) == 0)
+ {
+ p+=GetPixelChannels(image);
+ q+=GetPixelChannels(reconstruct_image);
+ continue;
+ }
+ for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
+ {
+ double
+ distance;
+
+ PixelChannel channel=GetPixelChannelChannel(image,i);
+ PixelTrait traits=GetPixelChannelTraits(image,channel);
+ PixelTrait reconstruct_traits=GetPixelChannelTraits(reconstruct_image,
+ channel);
+ if ((traits == UndefinedPixelTrait) ||
+ (reconstruct_traits == UndefinedPixelTrait) ||
+ ((reconstruct_traits & UpdatePixelTrait) == 0))
+ continue;
+ distance=fabs(p[i]-(double) GetPixelChannel(reconstruct_image,
+ channel,q));
+ if (distance >= MagickEpsilon)
+ break;
+ }
+ if (i < (ssize_t) GetPixelChannels(image))
+ break;
+ p+=GetPixelChannels(image);
+ q+=GetPixelChannels(reconstruct_image);
+ }
+ if (x < (ssize_t) columns)
+ break;
+ }
+ reconstruct_view=DestroyCacheView(reconstruct_view);
+ image_view=DestroyCacheView(image_view);
+ return(y < (ssize_t) rows ? MagickFalse : MagickTrue);
+}
+\f
+/*
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %
+% %
+% %
+% S e t I m a g e C o l o r M e t r i c %
+% %
+% %
+% %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% SetImageColorMetric() measures the difference between colors at each pixel
% location of two images. A value other than 0 means the colors match
% exactly. Otherwise an error measure is computed by summing over all
% pixels in an image the distance squared in RGB space between each image
% image->normalized_mean_error, suggests the images are very similar in
% spatial layout and color.
%
-% The format of the IsImagesEqual method is:
+% The format of the SetImageColorMetric method is:
%
-% MagickBooleanType IsImagesEqual(Image *image,
+% MagickBooleanType SetImageColorMetric(Image *image,
% const Image *reconstruct_image,ExceptionInfo *exception)
%
% A description of each parameter follows.
% o exception: return any errors or warnings in this structure.
%
*/
-MagickExport MagickBooleanType IsImagesEqual(Image *image,
+MagickExport MagickBooleanType SetImageColorMetric(Image *image,
const Image *reconstruct_image,ExceptionInfo *exception)
{
CacheView
*image_view,
*reconstruct_view;
- MagickBooleanType
- status;
-
double
area,
maximum_error,
mean_error,
mean_error_per_pixel;
+ MagickBooleanType
+ status;
+
+ size_t
+ columns,
+ rows;
+
ssize_t
y;
assert(image != (Image *) NULL);
- assert(image->signature == MagickSignature);
+ assert(image->signature == MagickCoreSignature);
assert(reconstruct_image != (const Image *) NULL);
- assert(reconstruct_image->signature == MagickSignature);
- if ((reconstruct_image->columns != image->columns) ||
- (reconstruct_image->rows != image->rows))
- ThrowBinaryException(ImageError,"ImageSizeDiffers",image->filename);
+ assert(reconstruct_image->signature == MagickCoreSignature);
area=0.0;
maximum_error=0.0;
mean_error_per_pixel=0.0;
mean_error=0.0;
+ rows=MagickMax(image->rows,reconstruct_image->rows);
+ columns=MagickMax(image->columns,reconstruct_image->columns);
image_view=AcquireVirtualCacheView(image,exception);
reconstruct_view=AcquireVirtualCacheView(reconstruct_image,exception);
- for (y=0; y < (ssize_t) image->rows; y++)
+ for (y=0; y < (ssize_t) rows; y++)
{
register const Quantum
- *restrict p,
- *restrict q;
+ *magick_restrict p,
+ *magick_restrict q;
register ssize_t
x;
- p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
- q=GetCacheViewVirtualPixels(reconstruct_view,0,y,reconstruct_image->columns,
- 1,exception);
+ p=GetCacheViewVirtualPixels(image_view,0,y,columns,1,exception);
+ q=GetCacheViewVirtualPixels(reconstruct_view,0,y,columns,1,exception);
if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
break;
- for (x=0; x < (ssize_t) image->columns; x++)
+ for (x=0; x < (ssize_t) columns; x++)
{
register ssize_t
i;
- if (GetPixelReadMask(image,p) == 0)
+ if (GetPixelWriteMask(image,p) == 0)
{
p+=GetPixelChannels(image);
q+=GetPixelChannels(reconstruct_image);
continue;
distance=fabs(p[i]-(double) GetPixelChannel(reconstruct_image,
channel,q));
- mean_error_per_pixel+=distance;
- mean_error+=distance*distance;
- if (distance > maximum_error)
- maximum_error=distance;
+ if (distance >= MagickEpsilon)
+ {
+ mean_error_per_pixel+=distance;
+ mean_error+=distance*distance;
+ if (distance > maximum_error)
+ maximum_error=distance;
+ }
area++;
}
p+=GetPixelChannels(image);
return(distortion);
}
-MagickExport Image *SimilarityImage(Image *image,const Image *reference,
+MagickExport Image *SimilarityImage(const Image *image,const Image *reference,
const MetricType metric,const double similarity_threshold,
RectangleInfo *offset,double *similarity_metric,ExceptionInfo *exception)
{
y;
assert(image != (const Image *) NULL);
- assert(image->signature == MagickSignature);
+ assert(image->signature == MagickCoreSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
assert(exception != (ExceptionInfo *) NULL);
- assert(exception->signature == MagickSignature);
+ assert(exception->signature == MagickCoreSignature);
assert(offset != (RectangleInfo *) NULL);
SetGeometry(reference,offset);
- *similarity_metric=1.0;
- if ((reference->columns > image->columns) || (reference->rows > image->rows))
- ThrowImageException(ImageError,"ImageSizeDiffers");
+ *similarity_metric=MagickMaximumValue;
similarity_image=CloneImage(image,image->columns-reference->columns+1,
image->rows-reference->rows+1,MagickTrue,exception);
if (similarity_image == (Image *) NULL)
similarity;
register Quantum
- *restrict q;
+ *magick_restrict q;
register ssize_t
x;
#if defined(MAGICKCORE_OPENMP_SUPPORT)
#pragma omp critical (MagickCore_SimilarityImage)
#endif
+ if ((metric == NormalizedCrossCorrelationErrorMetric) ||
+ (metric == UndefinedErrorMetric))
+ similarity=1.0-similarity;
if (similarity < *similarity_metric)
{
offset->x=x;
offset->y=y;
*similarity_metric=similarity;
}
- if (GetPixelReadMask(similarity_image,q) == 0)
+ if (metric == PerceptualHashErrorMetric)
+ similarity=MagickMin(0.01*similarity,1.0);
+ if (GetPixelWriteMask(similarity_image,q) == 0)
{
SetPixelBackgoundColor(similarity_image,q);
q+=GetPixelChannels(similarity_image);
continue;
}
- for (i=0; i < (ssize_t) GetPixelChannels(similarity_image); i++)
+ for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
{
PixelChannel channel=GetPixelChannelChannel(image,i);
PixelTrait traits=GetPixelChannelTraits(image,channel);
projects / imagemagick / blobdiff