Hi Thiago,

Have you tried using the perceptual difference option ("-pdiff") to
oiiotool? Or was your comment more of a request to include this particular
differencing algorithm?

I think the "-pdiff" option was added to oiiotool a little later, but older
versions of the idiff utility (which also comes with OpenImageIO) should be
able to do a perceptual difference with the "-p" option.

Cheers,
Mark

Cheers,
Mark


On Tue, Aug 5, 2014 at 1:53 AM, Thiago Ize <[email protected]> wrote:

> Has anyone ever looked into having oiiotool compute a more accurate color
> difference (https://en.wikipedia.org/wiki/Color_difference)?  For
> instance, the CIEDE2000.  This could help when comparing two images where
> you only want the diff to fail when the two images are perceptually
> different.  In other words, if my eyes can't see the difference, I don't
> want to be informed of a failure.
>
> Right now, I can get two pixels with the same error difference and yet one
> pixel will clearly look different between the two images while with the
> other pixel I can't see a single difference on my monitor.  This means I
> either have to set my fail thresholds really low and accept getting a bunch
> of images for which I can't tell the difference, or I set the thresholds
> higher, but risk being uninformed of visible image differences.
>
> Thiago
>
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>
>
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