Different colors for pictures made from CMYK and RGB PDFs

Questions and postings pertaining to the usage of ImageMagick regardless of the interface. This includes the command-line utilities, as well as the C and C++ APIs. Usage questions are like "How do I use ImageMagick to create drop shadows?".
Post Reply
KM11
Posts: 2
Joined: 2014-01-07T07:34:05-07:00
Authentication code: 6789
Contact:
Contact KM11

Different colors for pictures made from CMYK and RGB PDFs

Post by KM11 »

We use ImageMagick as a command line tool to create thumbnails out of PDF files. This works great, but the result concerning the chromaticity is completely different when we use a RGB-PDF as the original file rather than a CMYK-PDF.

Which parameters can we set (and how) to get a consistent result?
Top
User avatar
fmw42
Posts: 25562
Joined: 2007-07-02T17:14:51-07:00
Authentication code: 1152
Location: Sunnyvale, California, USA
Contact:
Contact fmw42

Re: Different colors for pictures made from CMYK and RGB PDF

Post by fmw42 »

Code: Select all

convert -colorspace sRGB image.pdf image.jpg
Top
KM11
Posts: 2
Joined: 2014-01-07T07:34:05-07:00
Authentication code: 6789
Contact:
Contact KM11

Re: Different colors for pictures made from CMYK and RGB PDF

Post by KM11 »

Thanks, but unfortunately this didn't work.
Top
User avatar
fmw42
Posts: 25562
Joined: 2007-07-02T17:14:51-07:00
Authentication code: 1152
Location: Sunnyvale, California, USA
Contact:
Contact fmw42

Re: Different colors for pictures made from CMYK and RGB PDF

Post by fmw42 »

What version of Ghostscript are you using? Perhaps an upgrade to the current version would help.

Perhaps converting from CMYK to sRGB via profiles might help.

see
http://www.imagemagick.org/Usage/formats/#profiles
Top
Post Reply

Return to “Users”

Who is online

Users browsing this forum: Amazon [Bot], Bing [Bot] and 4 guests