Legacy ImageMagick Discussions Archive

I am using Version 6.7.6-10 and Version 6.8.3-9 on Linux (x64).

Converting srgb_in.jpg with:
$ convert srgb_in.jpg -colorspace RGB rgb.jpg

results in rgb.jpg with IM 6.7.6-10 and rgb.jpg with IM 6.8.3-9.

The "new" one is much too dark based on a comparison with:
$ identify -verbose rgb.jpg ...

Okay, I confirm that converting with
$ convert srgb_in.jpg -colorspace CMYK cmyk.jpg
and
$ convert cmyk.jpg -colorspace sRGB srgb_out.jpg
result in the same tones.

ImageMagick (IM) 6.8
srgb_in.jpg and srgb_out.jpg have the same look.
Never the less the cmyk.jpg looks much too dark ...

I have uploaded the source image here. Even if I remove "+profile icm" from the command the result does not change.

Hello,

we are trying to convert a RGB JPEG image to "colorspace CMYK" with the following command:
$ convert -quality 100 input.jpg +profile icm -colorspace CMYK output.jpg
The resulting image looks extremely blurry and much too dark.
We are using ImageMagick 6.8.3.

Is there any way to produce ...

Thank you for your reply. I will retry the work flow after the upgrade.

Hey there,

I am trying to convert a TIFF image to "colorspace Gray" with the following command:
$ convert -compress none -depth 8 -colorspace Gray input.tif +profile icc,icm output.tif
After analysing the colorspace afterwards with:
$ identify -format "%[colorspace]" output.tif
Identify tells ...