Colored image become grayscale randomly on resize

[L3o-pold]

ImageMagick version

7.1.1-29

Operating system

Linux 5.10.0-0.deb10.16-amd64 #1 SMP Debian 5.10.127-2~bpo10+1 (2022-07-28) x86_64 GNU/Linux

Description

Randomly when resizing a file the result became grayscale (black and white only).

Steps to Reproduce

#!/bin/bash
for i in {1..1000}
do
  magick convert test.jpg -resize '1920x>' -verbose ./tmp/test.jpg`
done

When the resized image is correct it will output:

test.jpg=>/tmp/test.jpg JPEG 1402x1039 1402x1039+0+0 8-bit sRGB 93218B 0.040u 0:00.037

When the resized image is not correct it will output:

test.jpg=>/tmp/test.jpg JPEG 1402x1039 1402x1039+0+0 8-bit sRGB 81473B 0.040u 0:00.073

Images

[fmw42]

It works fine for me on IM 7.1.1.29 Mac Ventura doing

cd
cd desktop/test
for ((i=0; i<20; i++)); do
magick image.jpg -resize '1920x>' image_$i.jpg
done

Either try removing the -verbose or move it just after magick.

[L3o-pold]

I do not reproduce on mac either.

[fmw42]

Possibly a bad install on Linux. What are your versions for your JPG delegate? Are they the same on Linux as Mac?

[L3o-pold]

How to display the version?

magick -list delegate

Path: /usr/local/etc/ImageMagick-7/delegates.xml

Delegate                Command
-------------------------------------------------------------------------------
    blender =>          "blender' -b '%i' -F PNG -o '%o''\n'magick' convert -concatenate '%o*.png' '%o"
        bpg =>          "bpgdec' -b 16 -o '%o.png' '%i'; /usr/bin/mv '%o.png' '%o"
 dng:decode =>          "ufraw-batch' --silent --create-id=also --out-type=png --out-depth=16 '--output=%u.png' '%i"
        doc =>          "libreoffice' --convert-to pdf -outdir `dirname '%i'` '%i' 2> '%u'; /usr/bin/mv '%i.pdf' '%o"
       docx =>          "libreoffice' --convert-to pdf -outdir `dirname '%i'` '%i' 2> '%u'; /usr/bin/mv '%i.pdf' '%o"
        dot =>          "dot' -Tsvg '%i' -o '%o"
        dvi =>          "dvips' -sstdout=%%stderr -o '%o' '%i"
        eps<=>pdf       "gs' -sstdout=%%stderr -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 '-sDEVICE=pdfwrite' '-sOutputFile=%o' '-f%i"
        eps<=>ps        "gs' -sstdout=%%stderr -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 '-sDEVICE=ps2write' '-sOutputFile=%o' '-f%i"
       epub =>          "libreoffice' --convert-to pdf -outdir `dirname '%i'` '%i' 2> '%u'; /usr/bin/mv '%i.pdf' '%o"
        hpg =>          "hp2xx' -sstdout=%%stderr -m eps -f `basename '%o'` '%i';     /usr/bin/mv -f `basename '%o'` '%o"
       hpgl =>          "hp2xx' -sstdout=%%stderr -m eps -f `basename '%o'` '%i';     /usr/bin/mv -f `basename '%o'` '%o"
        htm =>          "html2ps' -U -o '%o' '%i"
       html =>          "html2ps' -U -o '%o' '%i"
https:decode =>          "curl' -s -L -o '%u.dat' 'https:%M"
       ilbm =>          "ilbmtoppm' '%i' > '%o"
        jpg<= lep       "lepton' '%i' '%o"
        jxr =>          "/usr/bin/mv '%i' '%i.jxr'; 'JxrDecApp' -i '%i.jxr' -o '%o.tiff'; /usr/bin/mv '%i.jxr' '%i'; /usr/bin/mv '%o.tiff' '%o"
        lep =>          "lepton' '%i' '%o"
       miff<= show      "magick' display -immutable -delay 0 -title '%M' '%i"
        odg =>          "libreoffice' --convert-to pdf -outdir `dirname '%i'` '%i' 2> '%u'; /usr/bin/mv '%i.pdf' '%o"
        odt =>          "libreoffice' --convert-to pdf -outdir `dirname '%i'` '%i' 2> '%u'; /usr/bin/mv '%i.pdf' '%o"
        pdf<=>eps       "gs' -sstdout=%%stderr -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 '-sDEVICE=eps2write' '-sPDFPassword=%a' '-sOutputFile=%o' '-f%i"
        pdf<=>ps        "gs' -sstdout=%%stderr -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 '-sDEVICE=ps2write' '-sPDFPassword=%a' '-sOutputFile=%o' '-f%i"
        png<= bpg       "bpgenc' -b 12 -q '%~' -o '%o' '%i"
        png<= webp      "cwebp' -quiet -q %Q '%i' -o '%o"
        pnm<= trace     "potrace' --svg --output '%o' '%i"
        pnm<= ilbm      "ppmtoilbm' -24if '%i' > '%o"
        ppt =>          "libreoffice' --convert-to pdf -outdir `dirname '%i'` '%i' 2> '%u'; /usr/bin/mv '%i.pdf' '%o"
       pptx =>          "libreoffice' --convert-to pdf -outdir `dirname '%i'` '%i' 2> '%u'; /usr/bin/mv '%i.pdf' '%o"
         ps<= prt       "lpr' '%i"
         ps<=>eps       "gs' -sstdout=%%stderr -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 '-sDEVICE=eps2write' '-sOutputFile=%o' '-f%i"
         ps<=>pdf       "gs' -sstdout=%%stderr -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 '-sDEVICE=pdfwrite' '-sOutputFile=%o' '-f%i"
         ps<= print     "@LPRDelegateDefault@ '%i"
      shtml =>          "html2ps' -U -o '%o' '%i"
        sid =>          "mrsidgeodecode' -if sid -i '%i' -of tif -o '%o' > '%u"
        svg =>          "rsvg-convert' -o '%o' '%i"
       tiff<= jxr       "/usr/bin/mv '%i' '%i.tiff'; 'JxrEncApp' -i '%i.tiff' -o '%o.jxr'; /usr/bin/mv '%i.tiff' '%i'; /usr/bin/mv '%o.jxr' '%o"
       tiff<= wdp       "/usr/bin/mv '%i' '%i.tiff'; 'JxrEncApp' -i '%i.tiff' -o '%o.jxr'; /usr/bin/mv '%i.tiff' '%i'; /usr/bin/mv '%o.jxr' '%o"
       tiff<= text      "tesseract' '%i' '%u'; /usr/bin/mv '%u.txt' '%o"
       tiff<= launch    "gimp' '%i"
video:decode =>          "ffmpeg' -nostdin -loglevel error -i '%s' -an -f rawvideo -y %s '%s"
        vsd =>          "libreoffice' --convert-to pdf -outdir `dirname '%i'` '%i' 2> '%u'; /usr/bin/mv '%i.pdf' '%o"
       vsdx =>          "libreoffice' --convert-to pdf -outdir `dirname '%i'` '%i' 2> '%u'; /usr/bin/mv '%i.pdf' '%o"
        wdp =>          "/usr/bin/mv '%i' '%i.jxr'; 'JxrDecApp' -i '%i.jxr' -o '%o.tiff'; /usr/bin/mv '%i.jxr' '%i'; /usr/bin/mv '%o.tiff' '%o"
       webp =>          "dwebp' -pam '%i' -o '%o"
        xls =>          "libreoffice' --convert-to pdf -outdir `dirname '%i'` '%i' 2> '%u'; /usr/bin/mv '%i.pdf' '%o"
       xlsx =>          "libreoffice' --convert-to pdf -outdir `dirname '%i'` '%i' 2> '%u'; /usr/bin/mv '%i.pdf' '%o"

[urban-warrior]

Thank you for reporting the issue. We have successfully reproduced it and are actively working on a patch to resolve it. You can expect this patch to be merged into the main GIT branch, later today. As part of our commitment to quality, this fix will also be included in the upcoming beta releases of ImageMagick by tomorrow. Your patience and feedback are greatly appreciated.

[Dangerar]

Hi @L3o-pold,

did a newer version solved this for you. I have still the problem on Win with 7.1.1-36.

Best regards
Daniel

[L3o-pold]

Yes it's solved for me