Re: [CinePaint] strange handling of SIGTERM

On Tue, 18 Aug 2009 00:11:21 +0100
Gene Selkov <[email protected]> wrote:

>  To make sure I knew what's right
> and what's not, I took a shot of a reflective IT8 in direct sunlight,
> saved it into an sRGB tiff with ufraw, using my camera's internal
> matrix (which is a more trustworthy calibration source than any
> profile I managed to produce so far), and when I view that in any
> profile-agnostic tool on my newly calibrated screen, it does look
> right. 

If you want to evaluate your workflow and troubleshoot any color
management issues, the best approach is to use some color profile
test images.  A search should uncover a lot of these test images,
but here is a link for a small set:

http://developer.apple.com/technotes/tn2006/downloads/tn2115_Images.zip

The corresponding description is here:

http://developer.apple.com/technotes/tn2006/tn2115.html

These test images contain embedded profiles which can be extracted
using ImageMagick or GraphicsMagick:

convert test_file.tif test_file.icm

The extracted profile can then be used in Cinepaint along with
suitable work space (e.g. Adobe RGB 1998) and display profiles
(e.g. sRGB) to see if color management is functioning properly.

Another tool to evaluate color management is tifficc (or jpegicc)
from the LittleCMS package.  It will allow you to accomplish
profile transformations manually (i.e. outside of any program)
to compare with transformations that should occur inside the
program.

A collection of test images for various purposes can be invaluable.

Frank Peters


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