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Dogway · 9th May 2021, 10:45

Thanks for the comparison, it's easier to see the accuracy difference between ColorSpace and avsresize.
zlib is known to employ "shortcuts" for performance reasons (link).

As you can see from the code I use higher precision floats, be it for gamut transformation matrices, YUV<->RGB coefficients or D65 illuminant (0.312713, 0.329016) in my case.

Currently I'm on the development of the fast-mode, looking forward to reach at least 100fps for gamut conversion. As for the gamma conversion process currently ColorSpace() is 60% faster than avsresize

9th May 2021, 10:45	#5 \| Link
Dogway Registered User Join Date: Nov 2009 Posts: 2,361	Thanks for the comparison, it's easier to see the accuracy difference between ColorSpace and avsresize. zlib is known to employ "shortcuts" for performance reasons (link). As you can see from the code I use higher precision floats, be it for gamut transformation matrices, YUV<->RGB coefficients or D65 illuminant (0.312713, 0.329016) in my case. Currently I'm on the development of the fast-mode, looking forward to reach at least 100fps for gamut conversion. As for the gamma conversion process currently ColorSpace() is 60% faster than avsresize