Legacy ImageMagick Discussions Archive

Perfect, this puts me in the right direction, thank you!

I do not understand what you are trying to do and why? Like it says in the title, I'm trying to simulate CMYK colorspace images being (incorrectly) decoded as RGB (well technically sRGB) by non-compliant software. (eg, ms paint, windows photo viewer, don't know of any non-compliant decoders that ...

Can't believe I didn't read your post more clearly - yea it looks like dropbox is fudging things. Depending on how you save the image from their site, it will add the profile or give you the original untouched source. Here's a zip with the original files, hopefully dropbox can't malform them then ...

I updated to ImageMagick 7.0.6-1 Q16 x64 2017-07-15, but it's interesting that I cannot reproduce your verbose options. The verbose output is as follows: Image: cmyk.jpg Format: JPEG (Joint Photographic Experts Group JFIF format) Mime type: image/jpeg Class: DirectClass Geometry: 512x512+0+0 Units ...

As you can see from the pastebin earlier, identify wasn't reporting any of that information. I guess it has to do with me being a few months out of date on my installed copy of imagemagick (ImageMagick 6.9.8-0 Q16 x64 2017-03-11). I'll try updating my 7.X install (trying to keep 6.X where it's at to ...

I think I'm still not being clear here. Regarding the "two results", I'm not sure that's very accurate. Like I said, cmyk.jpg was derived by just converting from the PNG source using imagemagick. I understand that the wrong one has no profile - presumably because ms paint and other non-compliant ...

Yea, I had a feeling that might be unclear. For example: PNG Source https://www.dropbox.com/s/xz7310y6a4met3r/Lenna.png?dl=0 PNG Source -> CMYK JPEG https://www.dropbox.com/s/z53m2r9zprytqpt/cmyk.jpg?dl=0 PNG Source -> CMYK JPEG, incorrectly decoded with ms paint, resaved as PNG https://www.dropbox ...

Bit of an odd request, I know, but how would I simulate CMYK incorrectly decoded as sRGB while staying in the sRGB colorspace?

I'll try and post a sample later today if that isn't clear enough
Thank you ^^