Re: [Lcms-user] Pre and post linearisation curves artifacts?

[Kai-Uwe B. <ku...@gm...>]

In trying to reproduce the noicy behaviour with tificc, the output was
fine. And after setting OMP_NUM_THREADS=1 the output became fine in 
the Oyranos example image viewer too while using pre and post CLUT curves.

So the noicy behaviour, while using cmsFLAGS_CLUT_POST_LINEARIZATION and
cmsFLAGS_CLUT_PRE_LINEARIZATION, appears to be triggered by threading.

kind regards
Kai-Uwe

Am 01.08.12, 11:55 +0200 schrieb Kai-Uwe Behrmann:
> Find below a screenshot illustrating the issue:
> http://www.oyranos.org/temp/lcms_post+pre_curves1.png
>
> Am 31.07.12, 14:40 +0200 schrieb Kai-Uwe Behrmann:
>> While moving the image around inside the Oyranos example image viewer, I observed darker pixels obtaining some random noice. Did someone else see this?
>> It goes completely away if the curves option is switched off. The noice does not stick to specual values, but changes with each new colour transform.