Raw data is naturally aliased because of sampling, sampling overlays a raster. That is why many cameras have anti-aliasing filters. That is why 'super-sharp' demosaicking algorithms are prone to labyrinth-type ("zipper") artifacts. Here is a couple of articles that may interest you: Sampling theorem and Aliasing.
Dear Sir:
Dear Sir:
Raw data is naturally aliased because of sampling, sampling overlays a raster. That is why many cameras have anti-aliasing filters. That is why 'super-sharp' demosaicking algorithms are prone to labyrinth-type ("zipper") artifacts. Here is a couple of articles that may interest you: Sampling theorem and Aliasing.