[Resolved] possible bug -level IM 6.7.6.8 Q16

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fmw42
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[Resolved] possible bug -level IM 6.7.6.8 Q16

Post by fmw42 »

IM 6.7.6.8 Q16 Mac OSX Snow Leopard

I was under the impression that -level 100x0% would produce the equivalent of -negate. This does not seem to be the case any longer (at least as of ImageMagick-6.7.4-10 and possibly earlier.

This is from Anthony's Users page at http://www.imagemagick.org/Usage/color_mods/#level where he uses -level 100x0% which shows what it should look like.

Image

My tests with IM 6.7.6.8:

convert rose: -level 100x0% rose_level_100x0.gif

Image


convert rose: -negate rose_negate.gif

Image
Last edited by fmw42 on 2012-05-03T20:45:28-07:00, edited 1 time in total.
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magick
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Re: possible bug -level IM 6.7.6.8 Q16

Post by magick »

We can reproduce the problem and will have a patch within a day or two. Thanks.
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fmw42
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Re: possible bug -level IM 6.7.6.8 Q16

Post by fmw42 »

This appears to be fixed in IM 6.7.6.9 beta.
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