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On Wed, May 4, 2011 at 6:06 PM, Sebastian Pipping <sping@g.o> wrote: |
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> Hello! |
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> |
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> |
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> I stumbled upon the article |
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> |
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> Gamma error in picture scaling |
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> http://www.4p8.com/eric.brasseur/gamma.html#Use_a_correct_software |
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> |
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> recently. I was actually pointed to it be some tool applying the proper |
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> algortihm. I think it was command line. |
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> Especially as I don't trust ImageMagick with files that matter I would |
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> love to find (or re-find) a command line tool that properly handles |
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> Gamma when resizing images. Needs be free software. Anyone? |
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ImageMagick works. I downloaded the Dalai Lama photo from that page |
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and converted it by doing: |
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convert -colorspace sRGB gamma_dalai_lama_gray.jpg -scale 50%% -set |
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colorspace sRGB gamma_dalai_lama_gray50.png |
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And the resulting image is correct. |
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