[Tig] Re: HDR format
Mon Apr 3 00:28:08 BST 2006
Thanks to oktobor for supporting the TIG
On my CRT, this images shows up with about 15-20 steps
in different areas (some are debatable).
When many colors and luminances are considered, a step of 0.25%
is sometimes considered the threshold of detectability.
On Apr 1, 2006, at 9:00 AM, Bob Friesenhahn wrote:
> Thanks to oktobor for supporting the TIG
>> I have attached an 8-bit (0.5% steps with gamma 2.2) PNG image
>> containing some gradients. Perhaps others can
>> test view this image using their own software and display equipment
>> and report if they see any obvious
>> stairstepping? I do not see any obvious stairstepping when viewed on
>> my own LCD display.
> It seems that the list processor stripped off my 900 byte image. The
> gradient image is available from
> Even when viewing this file using Mozilla, I do not see stairstepping
> with this file on my LCD display.
> Bob Friesenhahn
> bfriesen at simple.dallas.tx.us,
> GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
> Tig list - http://tig.oktobor.com/mailman/listinfo/tig
> TIG wiki: http://tig.colorist.org/wiki
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