Black point compensation enabled by default?

[blueklein76]

Hi all,

I'm using ImageMagick 6.7.2-0 and using the command line I get the same result for both these commands (converting an RGB jpg to CMYK):

Code: Select all

$ convert image.jpg -quality 75 -profile sRGB.icc -profile UncoatedFOGRA29.icc -intent Relative image-out.png
$ convert image.jpg -quality 75 -profile sRGB.icc -profile UncoatedFOGRA29.icc -intent Relative -black-point-compensation image-out.png

But when I perform the equivalent operations with the MagickWand C API, I get a much darker image for the first command, and a lighter image (matching the output from convert) when I then enable black point compensation for the second command.

So, it looks like convert is ignoring the "-black-point-compensation" flag and always enabling it?

Thanks

[mmogoldadvisor]

Atually i have the same issue here...also using ImageMagick 6.7.2-0 but when doing the same with MagickWand the first command image is darker. I don't know about the black point compensation but that could be the problem...hope someone can address this..