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ImageMagick-mirror/coders/bayer.c
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Dirk Lemstra 2abe65b018 Use the new license url.
2026-01-11 10:16:12 +01:00

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/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% BBBB AAA Y Y EEEEE RRRR %
% B B A A Y Y E R R %
% BBBB AAAAA Y EEE RRRR %
% B B A A Y E R R %
% BBBB A A Y EEEEE R R %
% %
% %
% Read/Write Raw Bayer Image Format %
% %
% Software Design %
% Cristy, Dirk Lemstra %
% July 2022 %
% %
% %
% Copyright @ 1999 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 %
% obtain a copy of the License at %
% %
% https://imagemagick.org/license/ %
% %
% Unless required by applicable law or agreed to in writing, software %
% distributed under the License is distributed on an "AS IS" BASIS, %
% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
% See the License for the specific language governing permissions and %
% limitations under the License. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
*/
/*
Include declarations.
*/
#include "MagickCore/studio.h"
#include "MagickCore/artifact.h"
#include "MagickCore/blob.h"
#include "MagickCore/blob-private.h"
#include "MagickCore/cache.h"
#include "MagickCore/channel.h"
#include "MagickCore/colorspace.h"
#include "MagickCore/colorspace-private.h"
#include "MagickCore/constitute.h"
#include "MagickCore/exception.h"
#include "MagickCore/exception-private.h"
#include "MagickCore/image.h"
#include "MagickCore/image-private.h"
#include "MagickCore/list.h"
#include "MagickCore/magick.h"
#include "MagickCore/memory_.h"
#include "MagickCore/monitor.h"
#include "MagickCore/monitor-private.h"
#include "MagickCore/pixel-accessor.h"
#include "MagickCore/quantum-private.h"
#include "MagickCore/registry.h"
#include "MagickCore/static.h"
#include "MagickCore/statistic.h"
#include "MagickCore/string_.h"
#include "MagickCore/transform.h"
#include "MagickCore/module.h"
#include "MagickCore/utility.h"
/*
Forward declarations.
*/
static MagickBooleanType
WriteBAYERImage(const ImageInfo *,Image *,ExceptionInfo *);
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d B A Y E R I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ReadBAYERImage() reconstructs a full color image from the incomplete color
% samples output from an image sensor overlaid with a color filter array
% (CFA). It allocates the memory necessary for the new Image structure and
% returns a pointer to the new image.
%
% Reference: http://im.snibgo.com/demosaic.htm.
%
% The format of the ReadBAYERImage method is:
%
% Image *ReadBAYERImage(const ImageInfo *image_info,
% ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image_info: the image info.
%
% o exception: return any errors or warnings in this structure.
%
*/
static Image *BayerSample(const Image *image, const char *offset,
RectangleInfo geometry, ExceptionInfo *exception)
{
Image
*clone,
*sample;
clone=CloneImage(image,0,0,MagickTrue,exception);
if (clone == (Image *) NULL)
return(clone);
(void) SetImageArtifact(clone,"sample:offset",offset);
sample=SampleImage(clone,geometry.width,geometry.height,exception);
clone=DestroyImage(clone);
return(sample);
}
static Image *ReadBAYERImage(const ImageInfo *image_info,
ExceptionInfo *exception)
{
Image
*image,
*image_a,
*image_b;
ImageInfo
*read_info;
RectangleInfo
geometry;
/*
Reconstruct a full color image from the incomplete camera sensor.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickCoreSignature);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickCoreSignature);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
image_info->filename);
read_info=CloneImageInfo(image_info);
(void) FormatLocaleString(read_info->filename,MagickPathExtent,"gray:%.1024s",
image_info->filename);
(void) CopyMagickString(read_info->magick,"GRAY",MagickPathExtent);
read_info->verbose=MagickFalse;
image=ReadImage(read_info,exception);
read_info=DestroyImageInfo(read_info);
if (image == (Image *) NULL)
return((Image *) NULL);
(void) ParseRegionGeometry(image,"50%",&geometry,exception);
image_a=BayerSample(image,"75x25",geometry,exception);
if (image_a == (Image *) NULL)
return(DestroyImage(image));
image_b=BayerSample(image,"25x75",geometry,exception);
if (image_b == (Image *) NULL)
{
image_a=DestroyImage(image_a);
return(DestroyImage(image));
}
AppendImageToList(&image_a,image_b);
image_b=EvaluateImages(image_a,MeanEvaluateOperator,exception);
image_a=DestroyImageList(image_a);
image_a=BayerSample(image,"25",geometry,exception);
if (image_a == (Image *) NULL)
{
image_b=DestroyImage(image_b);
return(DestroyImage(image));
}
AppendImageToList(&image_a,image_b);
image_b=BayerSample(image,"75",geometry,exception);
if (image_b == (Image *) NULL)
{
image_a=DestroyImageList(image_a);
return(DestroyImage(image));
}
AppendImageToList(&image_a,image_b);
image_b=CombineImages(image_a,sRGBColorspace,exception);
image_a=DestroyImageList(image_a);
if (image_b == (Image *) NULL)
return(DestroyImage(image));
(void) ParseRegionGeometry(image_b,"200%",&geometry,exception);
image_a=ResizeImage(image_b,geometry.width,geometry.height,image->filter,
exception);
image_b=DestroyImageList(image_b);
if (image_a == (Image *) NULL)
return(DestroyImage(image));
(void) CopyMagickString(image_a->magick,image_info->magick,
MagickPathExtent);
(void) CopyMagickString(image_a->filename,image_info->filename,
MagickPathExtent);
image=DestroyImageList(image);
return(image_a);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e g i s t e r B A Y E R I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% RegisterBAYERImage() adds attributes for the BAYER image format to
% the list of supported formats. The attributes include the image format
% tag, a method to read and/or write the format, whether the format
% supports the saving of more than one frame to the same file or blob,
% whether the format supports native in-memory I/O, and a brief
% description of the format.
%
% The format of the RegisterBAYERImage method is:
%
% size_t RegisterBAYERImage(void)
%
*/
ModuleExport size_t RegisterBAYERImage(void)
{
MagickInfo
*entry;
entry=AcquireMagickInfo("BAYER","BAYER","Raw mosaiced samples");
entry->decoder=(DecodeImageHandler *) ReadBAYERImage;
entry->encoder=(EncodeImageHandler *) WriteBAYERImage;
entry->flags|=CoderRawSupportFlag | CoderEndianSupportFlag;
(void) RegisterMagickInfo(entry);
entry=AcquireMagickInfo("BAYER","BAYERA","Raw mosaiced and alpha samples");
entry->decoder=(DecodeImageHandler *) ReadBAYERImage;
entry->encoder=(EncodeImageHandler *) WriteBAYERImage;
entry->flags|=CoderRawSupportFlag | CoderEndianSupportFlag;
(void) RegisterMagickInfo(entry);
return(MagickImageCoderSignature);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% U n r e g i s t e r B A Y E R I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% UnregisterBAYERImage() removes format registrations made by the BAYER module
% from the list of supported formats.
%
% The format of the UnregisterBAYERImage method is:
%
% UnregisterBAYERImage(void)
%
*/
ModuleExport void UnregisterBAYERImage(void)
{
(void) UnregisterMagickInfo("BAYERA");
(void) UnregisterMagickInfo("BAYER");
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% W r i t e B A Y E R I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% WriteBAYERImage() deconstructs a full color image into a single channel
% RGGB raw image format.
%
% Reference: http://im.snibgo.com/mosaic.htm.
%
% The format of the WriteBAYERImage method is:
%
% MagickBooleanType WriteBAYERImage(const ImageInfo *image_info,
% Image *image,ExceptionInfo *exception)
%
% A description of each parameter follows.
%
% o image_info: the image info.
%
% o image: The image.
%
% o exception: return any errors or warnings in this structure.
%
*/
static Image* BayerApplyMask(Image *images,size_t index_a,size_t index_b,
size_t fill_x,size_t fill_y,ExceptionInfo *exception)
{
DrawInfo
*draw_info;
Image
*canvas,
*mask_image,
*result;
PixelInfo
pixel;
Quantum
*q;
draw_info=AcquireDrawInfo();
if (draw_info == (DrawInfo *) NULL)
return((Image *) NULL);
draw_info->fill_pattern=AcquireImage((ImageInfo *) NULL,exception);
if (draw_info->fill_pattern == (Image *) NULL)
{
draw_info=DestroyDrawInfo(draw_info);
return((Image *) NULL);
}
(void) SetImageExtent(draw_info->fill_pattern,2,2,exception);
(void) QueryColorCompliance("#000",AllCompliance,
&draw_info->fill_pattern->background_color,exception);
(void) SetImageBackgroundColor(draw_info->fill_pattern,exception);
q=GetAuthenticPixels(draw_info->fill_pattern,(ssize_t) fill_x,(ssize_t)
fill_y,1,1,exception);
if (q == (Quantum *) NULL)
{
draw_info=DestroyDrawInfo(draw_info);
return((Image *) NULL);
}
(void) QueryColorCompliance("#fff",AllCompliance,&pixel,exception);
SetPixelViaPixelInfo(draw_info->fill_pattern,&pixel,q);
mask_image=CloneImage(GetImageFromList(images,(ssize_t) index_a),0,0,
MagickTrue,exception);
if (mask_image == (Image *) NULL)
{
draw_info=DestroyDrawInfo(draw_info);
return((Image *) NULL);
}
draw_info->primitive=ConstantString("color 0,0 reset");
(void) DrawImage(mask_image,draw_info,exception);
(void) SetImageAlphaChannel(mask_image,OffAlphaChannel,exception);
draw_info=DestroyDrawInfo(draw_info);
canvas=CloneImage(GetImageFromList(images,(ssize_t) index_b),0,0,MagickTrue,
exception);
if (canvas == (Image *) NULL)
{
mask_image=DestroyImage(mask_image);
return((Image *) NULL);
}
(void) CompositeImage(canvas,mask_image,CopyAlphaCompositeOp,MagickTrue,0,0,
exception);
mask_image=DestroyImage(mask_image);
result=CloneImage(GetImageFromList(images,(ssize_t) index_a),0,0,MagickTrue,
exception);
if (result != (Image *) NULL)
{
(void) CompositeImage(result,canvas,OverCompositeOp,MagickTrue,0,0,
exception);
(void) SetImageAlphaChannel(result,OffAlphaChannel,exception);
}
canvas=DestroyImage(canvas);
return(result);
}
static MagickBooleanType WriteBAYERImage(const ImageInfo *image_info,
Image *image,ExceptionInfo *exception)
{
Image
*bayer_image=(Image *) NULL,
*images=(Image *) NULL;
MagickBooleanType
status;
/*
Deconstruct RGB image into a single channel RGGB raw image.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickCoreSignature);
assert(image != (Image *) NULL);
assert(image->signature == MagickCoreSignature);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
bayer_image=CloneImage(image,0,0,MagickTrue,exception);
status=MagickFalse;
if (bayer_image == (Image *) NULL)
return(MagickFalse);
(void) SetImageColorspace(bayer_image,sRGBColorspace,exception);
(void) SetPixelChannelMask(bayer_image,(ChannelType) (RedChannel |
GreenChannel | BlueChannel));
images=SeparateImages(bayer_image,exception);
bayer_image=DestroyImage(bayer_image);
if (images == (Image *) NULL)
return(MagickFalse);
bayer_image=BayerApplyMask(images,0,1,1,0,exception);
if (bayer_image == (Image *) NULL)
{
images=DestroyImageList(images);
return(MagickFalse);
}
AppendImageToList(&images,bayer_image);
bayer_image=BayerApplyMask(images,3,1,0,1,exception);
if (bayer_image == (Image *) NULL)
{
images=DestroyImageList(images);
return(MagickFalse);
}
AppendImageToList(&images,bayer_image);
status=MagickFalse;
bayer_image=BayerApplyMask(images,4,2,1,1,exception);
if (bayer_image != (Image *) NULL)
status=MagickTrue;
images=DestroyImageList(images);
if (bayer_image != (Image *) NULL)
{
ImageInfo
*write_info;
write_info=CloneImageInfo(image_info);
write_info->verbose=MagickFalse;
(void) CopyMagickString(write_info->magick,"GRAY",MagickPathExtent);
(void) CopyMagickString(bayer_image->filename,image->filename,
MagickPathExtent);
status=WriteImage(write_info,bayer_image,exception);
bayer_image=DestroyImage(bayer_image);
write_info=DestroyImageInfo(write_info);
}
return(status);
}
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