Le tridi 23 thermidor, an CCXXII, Michael Niedermayer a écrit : > thats not practical > a 1024x768 image would need to be upscaled to 262144x196608 to get > 8bit precission from a nearest neighbor resampler as basis
I am not sure this makes sense. Scaling is already an approximation, and without gamma correction, it certainly does not yield 8 bits precision. I believe in most cases, 2× or 4× upscaling would look plenty good enough for most cases. > also see vf_perspective.c which supports bilinear and bicubic > interpolation, these surely could be shared and exist already. > > of course we could push it with just nearest neighbor and work on that > later, but i dont think only nearest neighbor and leaving it at that > is a reasonable choice, its too poor quality wise Certainly, we want that all filters that need it eventually get interpolation code that produces nice-looking images, is optimized and configurable. Preparing the framework for that is a worthy endeavour, and should be done, as much as possible, before introducing new filters that require it. But right now we have a filter that is ready for integration with nearest interpolation: surely it is better to merge it now rather than having it wait in someone's private tree while we bikeshed the common interpolation API. Is it not? Regards, -- Nicolas George
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