Legacy ImageMagick Discussions Archive

Hi, I am not sure if this is a bug in IM or Ghostscript. When converting from a PDF document to a raster image format (png for example), on PPC machines the colorspace comes out completely off. The same command on an Intel machine works fine. I'm assuming some endian-specific code is off somewhere. My command is:

/opt/local/bin/convert -sample 250 -colorspace CMYK 485ad067f1866.pdf[0] -colorspace RGB 485ad067f1866.png

You can see the resulting images below:

PPC:


Intel:

Try this:

• /opt/local/bin/convert -colorspace RGB 485ad067f1866.pdf[0] -resize 250 485ad067f1866.png

Does that return identical renderings?

That command results in the same bright green on both platforms.

The correct solution to this problem is to use two color profiles, generally a Swop for CMYK and an sRGB for RGB. First check to ensure LCMS is supported in your ImageMagick distribution otherwise you will get unexpected results. Type

• identify -list configure

and assure LCMS is associated with the DELEGATES tag.

get LCMS deletegate at http://www.imagemagick.org/download/delegates/