Legacy ImageMagick Discussions Archive

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:


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


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


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

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