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What disturbs me most, is the color subsampling and the "Gibb" with it.
Frequency spectrum among the two is definitely different, the halos have different width and intensity.
The spectral transfer diagram is quite important to judge influence on noise.
E.g. after the dithering to do some filtering again is likely to have chaotic results on the appearance of the noise.
Last edited by geometer; 29th June 2016 at 05:32.
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