possible bug HCL -modulate IM 6.8.0.4 Q16

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fmw42
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possible bug HCL -modulate IM 6.8.0.4 Q16

Post by fmw42 »

IM 6.8.0.4 Q16 Mac OSX Snow Leopard

I can confirm a possible problem when modulating saturation in HCL colorspace, where some white parts become black. It does not go away in HDRI mode

see topic viewtopic.php?f=1&t=22243

Input:
Image

HCL mode: (see small black square in middle of limo)
convert wedding_party_sm.jpg -define modulate:colorspace=HCL -modulate 100,80,100 wedding_party_sm_hcl_h80.jpg
Image

HSL mode: (fine)
convert wedding_party_sm.jpg -define modulate:colorspace=HSL -modulate 100,80,100 wedding_party_sm_hsl_h80.jpg
Image

HSB mode: (fine)
convert wedding_party_sm.jpg -define modulate:colorspace=HSB -modulate 100,80,100 wedding_party_sm_hsb_h80.jpg

Image
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magick
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Re: possible bug HCL -modulate IM 6.8.0.4 Q16

Post by magick »

We can reproduce the problem you posted and have a patch in ImageMagick 6.8.0-5 Beta available by sometime tomorrow. Thanks.
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