Legacy ImageMagick Discussions Archive

Hi everyone,

when I convert a pdf to an image the value and saturation seems wrong, but by adding -colorspace sRGB corrects the output image. Now I want to do the same in magick++ but I can't find the equivalent procedure.

I already try with colorSpace(sRGBColorspace) but it does nothing. Does anyone know how to do this with magick++?

The imagemagick's version is: 6.7.7-10

The imagemagick's version is: 6.7.7-10

There was a change in IM handling of colorspace about that time. You would be best to upgrade your version of IM and Magick++. Your version is about 120 releases old.

see
viewtopic.php?f=4&t=21269

Thanks for your reply,
I update my imagemagick and is now 6.9.0-0, or at least that is what says convert -version:

Version: ImageMagick 6.9.0-0 Q16 x86_64 2014-11-17 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2014 ImageMagick Studio LLC
Features: DPC OpenMP
Delegates (built-in): bzlib djvu fftw fontconfig freetype jbig jng jpeg lcms lqr lzma openexr pangocairo png tiff x xml zlib

I also configure CodeBlocks to use magick++ 6.9.0-0 but is behaving the same as 6.7.7-10

My OS right now is: ubuntu 14.04

Just to clarify, this is the image I get if convert a pdf to an image using imagemagick without -colorspace sRGB.
It is also what I get if only open the pdf and save it using magick++
http://s11.postimg.org/uf4eg2wf5/Blender.jpg


And this is the image I get if I add -colorspace sRGB. This is also how I see it on Evince.
http://s27.postimg.org/s0wx6n1o1/Blenders_RGB.jpg
This is the image that I want to obtain with Magick++

[Mod note: The two images didn't show, so I added them as links.]

I should've give this links of the images instead:
Image 1
Image 2

Your jpg image is CMYK. If your command below is not good color quality, then you should use profiles. Also -quality should come after reading the input and just before the output. It does not use %.
With profiles and assuming the pdf is CMYK like the jpg, use
or from the jpg below, which produces a result that is very close to what you want

If your command below is not good color quality

No no, the color with this command is okay for me. I'm just asking how to do the same that -colorspace sRGB does but with Magick++.
But if it not possible, then something similar.

With profiles and assuming the pdf is CMYK like the jpg, use

Code: Select all

convert -density 72 Blender.pdf[0] -profile /path2profile/USWebCoatedSWOP.icc  -profile /path2profile/sRGB.icc  -quality 90 BlendersRGB.jpg

It's weird, because it seems like it should in gimp but not on gTumb or Firefox.
Screenshot

Sorry, I do not know Magick++. But see colorspace under image attributes at http://www.imagemagick.org/Magick++/Ima ... Attributes