>
> The question is not when it can be used, the question is when is it
> useful. I would be very surprised if it removes maze artifacts when
> using bi-linear interpolation.
>
> For vng interpolation, we have the 4-vng method. If it helps in the
> 4-vng method it might indicate that we have a bug in the
> implementation of 4-vng. If this is the case, we should fix the bug
> instead of work around it.
>
It will not help with VNG4, but it should be useful with algorithms that can't
easily be made in 4-color versions such as AHD or PPG.
Regards,
Niels Kristian
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