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fft + ift roundtrip fails to produce a similar output image #302

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FrostBird347 opened this issue Jan 8, 2024 · 1 comment
Open

fft + ift roundtrip fails to produce a similar output image #302

FrostBird347 opened this issue Jan 8, 2024 · 1 comment

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@FrostBird347
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FrostBird347 commented Jan 8, 2024 •
edited

ImageMagick version

6.9.11-60 Q16 x86_64 2021-01-25 (installed via macports)
Features: Cipher DPC Modules
Delegates (built-in): bzlib djvu fftw fontconfig freetype gslib heic jbig jng jp2 jpeg lcms ltdl lzma openexr png ps raw tiff webp x xml zlib

Operating system

MacOS

Operating system, version and so on

10.14.6

Description

running -fft/+fft and -ift/+ift outputs images that look almost nothing like the original.

Steps to Reproduce

  • run convert [image] -fft -ift [image_output]
  • observe the massive differences between the input and output images

Images

inputted example images:
kodim23
testcard_rgba
testcard
dice

images above after being converted:
kodim23_OUT
testcard_rgba_OUT
testcard_OUT
dice_OUT
@urban-warrior
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Download the latest ImageMagick release, ImageMagick-6.9.13-4. If the problem persists, let us know and we will investigate further.

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@urban-warrior @FrostBird347