On Dec 9, 2013, at 2:29 PM, Tingan Ho <[email protected]> wrote: >> >> Tingan, would it be acceptable for you to do the resampling in JavaScript? > > > First, writing it in Javascript is less performant. Since natively you can > have access to the GPU. Second, it is abstract a layer for JS developers, > since they don't need to care about bicubic resampling algoritmen. Third, > it kind of make sense if you set imageSmothingEnabled to true in the > context object, that all down-scaling should use bicubic resampling(I > haven't tried yet, but I think the scale use bicubic sampling).
I’m not sure why you have a bias towards bicubic filtering as there are many different scaling filters that can be used. Lanczos is better than bicubic in many (most?) cases. Spline scaling can also do a good job, as can fractal interpolation. There are even specific scaling systems like Sal which are designed for upscaling sprites, and do a better job at the specific task than anything else (IIRC this is frequently used by the various old console emulators) —Oliver
