Thank you! This works just fine. I have to add one step of converting jpg->tif but that is trivial in comparisson to the time I've invested trying to get IM to work!
I'm just wondering how I missed tifficc when I was reviewing the documentation... I'll go back and look again (now that I know what I'm looking for ;-) Cheers, Scott In response to [EMAIL PROTECTED] on 8/4/02 at 3:49 PM |Hi, | |You could, alternatively, use the tifficc utility that comes with |littlecms. If you can stay with TIFF, then tifficc is all you need. | |For building tifficc, just use 'make utils' after a normal build. | |Tifficc is more limitated that IM in the way it only handles tiff, |and it only deals with profile conversions, but it can effectively |manage embedded profiles, almost any colorspace and has |some "advanced features" for color management. | |AFAIK, many people is using tifficc in batch mode for bulk |conversions. | |There is a similar utility for JPEG files, but be warned CMYK |JPEG does have a fatal flaw, if generated by Adobe, C,M,Y |components comes reversed (negative), also, CMYK behaves |not so good when JPEG compression is applied | |Hope this helps, |Mart� Maria |The little cms project |http://www.littlecms.com |[EMAIL PROTECTED] | | | | |----- Original Message ----- |From: "Scott Sandeman-Allen (RSCorp)" <[EMAIL PROTECTED]> |To: <[EMAIL PROTECTED]> |Sent: Sunday, August 04, 2002 1:07 AM |Subject: [Lcms-user] profiles, lcms & image magick | | |> Hello all! |> |> I am trying to solve a problem with RGB to CMYK conversions using ICC |> profiles liblcms and Image Magick. |> |> I know many problems can be injected by IM itself but I've tried so |many |> things I want to isolate the problem as best as possible. (BTW I'm |> running IM under x86 Linux - Red Hat & Mandrake and have been |compiling |> V1.08 & 1.09 of lcms with 2.4.7-4 of IM) |> |> The problem manifests itself in that I get RGB images tagged with a |CMYK |> profile. This of course does not work very well. |> |> A sample command line I am using is as follows: |> |> convert srcImage.jpg +profile icm -profile rgb.icc \ |> -profile cmyk.icc outputImage.tif |> |> This purges any existing profile, then tags the image with the source |> profile and then the output profile. Unfortunately, as mentioned |> earlier, the conversion is not taking place. |> |> I suspect one of my problems could be bad profiles and would like to |> eliminate that as the cause of my problems. My theory of the moment is |> that IM/liblcms is not recognising some aspect of the source or |> destination profiles and is therefore not translating the iamge from |one |> colorspace to another. |> |> For testing, I downloaded the Adobe Photoshop profile package from the |> Adobe website. I have several *legal* copies of Adobe's Photoshop |(been |> using it since it was called Barnescan XP in 1989) so have a few |> iterations of profiles from Adobe laying about. I have also had |> Macintosh computers for a long time on my network and have profiles |> dating back to their first versions though they didn't add much to |their |> systems regarding print, it was all soft-proofing stuff. |> |> I have tried dozens of combinations of display, input, colorspace and |> output profiles i.e. AdobeRGB1988.icc -> USWebUncoaded.icc without any |> success. (shell scripting made this easier). I have also downloaded |and |> decompressed the profiles under Windows, Mac OS9 & Mac OSX as well as |> decompressed them under Linux too. Apparently, the ICC spec is that |all |> data is stored big-endian so x-platform issues should be less of an |> issue. |> |> Has anyone been able to successfully use profiles sourced from Adobe |to |> work with liblcms & Image Magick under Linux? |> |> Alternatively, I could be having a compilation problem, however when I |> install pre-built binaries from Red Hat and Mandrake, I have not been |> able to successfully process images either. |> |> Any thoughts or suggestions would be most welcome. I have tried so |many |> things that the frustration level is building and I'm running out of |> time to get this to work. |> |> Scott |> |> |> ------------------------------------------------------- |> This sf.net email is sponsored by:ThinkGeek |> Welcome to geek heaven. |> http://thinkgeek.com/sf |> _______________________________________________ |> Lcms-user mailing list |> [EMAIL PROTECTED] |> https://lists.sourceforge.net/lists/listinfo/lcms-user |> |> | | ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Lcms-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/lcms-user
