---------------------------------------- > Date: Sat, 22 Jun 2013 10:44:15 +0900 > From: [email protected] > To: [email protected] > CC: [email protected] > Subject: Re: [E-devel] Enlightenment pngs with embedded iCC profiles > > On Fri, 21 Jun 2013 16:15:47 -0500 Doug Newgard <[email protected]> said: > >> I'm sure some of you have seen the warnings generated by libpng 1.6: "known >> incorrect sRGB profile". Now, this is no big deal, it's just a warning, but I >> still wanted to look into it further. By my count, there are 800 png files in >> Enlightenment, of which only 6 have embedded iCC profiles, all from HP. The >> rest are sRGB colorspace, but do not include a profile. There are some good >> arguments for this >> (http://imageoptim.com/color-profiles.html >> http://www.gballard.net/psd/save_for_web_embed_ICC_profile.html) >> and since this seems to be the default, I've attached the 6 files with the >> profiles stripped out. As you can see, it doesn't change the image or the >> colorspace, it just leaves the calibration up to the end user's system. >> >> I haven't been able to find just what's wrong with the HP iCC profile being >> used that the authors of libpng don't like, but it makes sense to standardize >> the way profiles are handled anyway. And it has the nice side effect of >> silencing warnings, even if the Debian/Ubuntu users aren't likely to see them >> for a couple of years. >> >> I can just change the iCC profile instead if you would prefer. I've seen >> multiple people recommend the Argyll sRGB profile, which is still "sRGB >> IEC61966-2.1" and is public domain. >> >> Elementary has a lot more pngs with the HP profile, so once I know for sure >> what people would prefer, I'll fix them, too. >> >> Doug > > what we need to know is what is adding the hp profile causing the warinig. > what > tool does it? is it gimp? photoshop? imagemagick? otherwise we go creating > warnings again if that tool is used...
That's a good question. On my machine, GIMP refuses to even export the image with the HP profile, so I doubt that's it unless that's because of libpng 1.6. I do know that the HP profile is not included with GIMP, only their built-in profile which is used for display, it does not get embedded into images. I did find some information about the HP profile in relation to Photoshop, but others said that it didn't come with Photoshop and suggested it may have been included with printer/scanner software. I did find that Photoshop does not embed a profile by default when exporting PNGs. As far as I can tell, Imagemagick doesn't include any iCC profiles, so that can't be it, either. On my system, I have profiles from Colord, Argyll, Oyranos, and Yamma, and none of them include the problem profile. Where this profile came from is sitll a bit of a mystery to me. > > -- > ------------- Codito, ergo sum - "I code, therefore I am" -------------- > The Rasterman (Carsten Haitzler) [email protected] > > > ------------------------------------------------------------------------------ > This SF.net email is sponsored by Windows: > > Build for Windows Store. > > http://p.sf.net/sfu/windows-dev2dev > _______________________________________________ > enlightenment-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/enlightenment-devel > ------------------------------------------------------------------------------ This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev _______________________________________________ enlightenment-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/enlightenment-devel
