Legacy ImageMagick Discussions Archive

Somehow it doesn't work as expected. I have uploaded a test image with a blown sky here. CMYK levels range from 0-100% for C and K and 0-97% for M and Y: https://www.dropbox.com/s/0thn6x35znaspn5/imDSC3125.jpg?dl=0 Now I would like to make sure that C,M,Y are at least 5% and K is maximum 85 ...

I successfully converted an example image from AdobeRGB to CMYK. "identify -verbose" says the lowest value of C is 8 (out of a range of 0-255) or 0.03 something in a range 0-1, so I want to add the missing bits to it to reach my 5% = 0.05. I tried adding to it using -evaluate Add 5 or -evaluate Add ...

I guess my question was a bit misleading: In the end, I don't want to manipulate just single pixels. All changes need to be done globally, to avoid changing the look of the image (as far as possible) while making it printable. So it seems to me that I don't need something more complex than e.g ...

A related question on this topic: http://www.imagemagick.org/discourse-server/viewtopic.php?f=1&t=26681. After conversion, I would like to adjust the CMYK levels. For offset printing images I want to make sure that each of C-M-Y is at least 5% everywhere, and K is maximum 85% everywhere, and the sum ...