ImageMagick
Conversion errors for some .tif files with versions higher than 6.9.12-77
ImageMagick version
6.9.12-78
Operating system
Linux
Operating system, version and so on
Debian 11.7
Description
Converting a .tif file to a .jpeg file works successfully with ImageMagick 6.9.12-77, but looks incorrect with versions ImageMagick 6.9.12-78 and higher. The convert command runs successfully, but from version 6.9.12-78 the result looks much worse, as if there were problems with the conversion.
Steps to Reproduce
If you use the image original.tif from the images.zip attachment, the conversion error should occur.
Version 6.9.12-77:
convert --version
Version: ImageMagick 6.9.12-77 Q16 x86_64 c8a10adfe:20230211 https://legacy.imagemagick.org Copyright: (C) 1999 ImageMagick Studio LLC License: https://imagemagick.org/script/license.php Features: Cipher DPC Modules OpenMP(4.5) Delegates (built-in): bzlib freetype jbig jng jpeg lcms ltdl lzma png tiff webp xml zlib
convert -verbose original.tif 77.jpeg
original.tif TIFF 1063x1063 1063x1063+0+0 8-bit ColorSeparation CMYK 1.29019MiB 0.090u 0:00.066 original.tif=>77.jpeg TIFF 1063x1063 1063x1063+0+0 8-bit ColorSeparation CMYK 785193B 0.050u 0:00.054
Version 6.9.12-78 and higher:
convert --version
Version: ImageMagick 6.9.12-78 Q16 x86_64 999ee5b55:20230307 https://legacy.imagemagick.org Copyright: (C) 1999 ImageMagick Studio LLC License: https://imagemagick.org/script/license.php Features: Cipher DPC Modules OpenMP(4.5) Delegates (built-in): bzlib freetype jbig jng jpeg lcms ltdl lzma png tiff webp xml zlib
convert -verbose original.tif 78.jpeg
original.tif TIFF 1063x1063 1063x1063+0+0 8-bit ColorSeparation CMYK 1.29019MiB 0.070u 0:00.064 original.tif=>78.jpeg TIFF 1063x1063 1063x1063+0+0 8-bit ColorSeparation CMYK 926801B 0.060u 0:00.061
Images
Thanks for the problem report. We can reproduce the issue and will have a patch to fix it in the GIT main branch @ https://github.com/ImageMagick/ImageMagick later today. The patch will be available in the beta releases of ImageMagick @ https://imagemagick.org/archive/beta/ by sometime tomorrow.
