unable to reading CMYK images about image_voodoo HOT 4 CLOSED

Is this specifically JPEG w/ CMYK? I think I have some code I can adapt to support this, but I want to make sure I understand what format of image we are talking about first. The thing I will first try is to convert CMYK raster to RGB raster. This seems like it may be a little lossy? stackoverflow had a much more involved answer on this but it involved getting stuff from Adobe.

http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4799903

from image_voodoo.

Hello enebo

yes i was handling JPEG files with CMYK format. I goggled stackoverflow, it seems like Java has some issue with CMYK support on JPEG files.

http://stackoverflow.com/questions/2408613/problem-reading-jpeg-image-using-imageio-readfile-file

from image_voodoo.

yeah. I believe I can support this in spite Java's lack of support. The werid bit is it looks like I need to add three different conversion mechanisms depending on specifc type of non-RGB JPEG.

from image_voodoo.

Ok, so this is the error that I get for CMYK JPEGs:

$ image_voodoo -d ../5053a01l.jpg
IOError: Unsupported Image Type
    load at org/jruby/RubyKernel.java:1081
  (root) at /Users/user/.rvm/gems/jruby-1.7.12@project/bin/image_voodoo:23
    eval at org/jruby/RubyKernel.java:1101
  (root) at /Users/user/.rvm/gems/jruby-1.7.12@project/bin/jruby_executable_hooks:15 

And I found a .jar which supports CMYK images decoding - http://www.randelshofer.ch/blog/2011/08/reading-cmyk-jpeg-images-with-java-imageio/ . I will prepare experimental version of code for it.

from image_voodoo.