> Date: Sat, 22 Jun 2013 13:20:33 +0900 > From: [email protected] > To: [email protected] > CC: [email protected] > Subject: Re: [E-devel] Enlightenment pngs with embedded iCC profiles > > On Sat, 22 Jun 2013 14:12:44 +1000 David Seikel <[email protected]> said: > >> On Fri, 21 Jun 2013 22:39:19 -0500 Doug Newgard <[email protected]> >> wrote: >> >>> ---------------------------------------- >>>> 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. >> >> Look at the SVN / git history for the images with that HP profile. >> That at least will tell you WHO added them. Than ask that person >> what they used to make them / last used to massage them / where they got >> them from. > > given the images... one i know i created years ago with gimp. others i think > came from manowarrior (he did his work with inskacpe and/or photoshop and > illustrator?)
Yep, git blame on the icons, at least, gives me d6dab499 and f72b2067. The former says icons from manowarrior, the second is optimizing the images. The iCC profile seems to be in the originals from manowarrior. Loading them up in a hex editor, I see a string that says "iCCPPhotoshop ICC profile", so this does seem to be originally from Photoshop. I wonder if they're still using it or if it was only in an older version? > > -- > ------------- 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
