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Re: convert from sRGB to linear RGB
Posted: 2012-06-25T19:57:50-07:00
by NicolasRobidoux
Code: Select all
magick curios.tif -colorspace RGB -filter Box -resize 35x23 -colorspace sRGB curios1.tif
magick curios.tif -set colorspace sRGB -colorspace RGB curiosRGB.ppm
magick curiosRGB.ppm -filter Box -resize 35x23 curiosSMALL.ppm
magick curiosSMALL.ppm -set colorspace RGB -colorspace sRGB curios2.tif
which is somewhat representative of what I use this new feature for, gives a maxabs difference of 4, which in 16-bit is totally expected.
Hurray!
Re: convert from sRGB to linear RGB
Posted: 2012-06-25T20:08:38-07:00
by NicolasRobidoux
fmw42 wrote:Is this change only for IM 7 or also for IM 6.
Fred: Per Changelog (and parallel list of files updated by svn up), it's IM6 too.
Re: convert from sRGB to linear RGB
Posted: 2012-06-25T21:12:03-07:00
by fmw42
NicolasRobidoux wrote:fmw42 wrote:Is this change only for IM 7 or also for IM 6.
Fred: Per Changelog (and parallel list of files updated by svn up), it's IM6 too.
Then I presume it will show up in IM 6.7.7.10 (beta) and eventually the IM 6 changelog. I have not yet downloaded the beta as I did not know whether it would be there.
Re: [SOLVED] convert from sRGB to linear RGB
Posted: 2012-06-25T23:04:17-07:00
by anthony
A bit off topic... but may be useful...
You cat get the changelog changes for the SVN
svn diff -r HEAD ChangeLog
HEAD -- the main svn repository
BASE -- you last download from repository
number -- a specific number
I often use "diffuse" as a file difference viewer, as it will accept a SVN '-r' parameter instead of one of the two file you wish to compare. EG:
diffuse -r HEAD ChangeLog
If only one file is present it compares against your last download (BASE) so you can check the changes you made.
Very useful for programmers.
Re: [SOLVED] convert from sRGB to linear RGB
Posted: 2012-06-26T09:35:16-07:00
by NicolasRobidoux
Cristy: My student Adam Turcotte immediately put the conversion bit in the code he's running for his thesis (with an ETA in 13 days).
Again: Thank you.
Re: [SOLVED] convert from sRGB to linear RGB
Posted: 2012-06-26T09:41:41-07:00
by magick
We just finalized ImageMagick-6.7.7-10 / 7.0.0-0 to better support grayscale / linear RGB / sRGB based on your recommendations. The latest has just a few patches since yesterday.