Apple Inc.
Noise reduction with classification-based contrast preservation

Abstract:

In one embodiment, a method includes obtaining an image comprising a plurality of pixels. The method includes determining, for a particular pixel of the plurality of pixels, a feature value. The method includes selecting, based on the feature value, a set of selected pixels from a set of candidate pixels in an image region surrounding the particular pixel. The method includes denoising the particular pixel based on the set of selected pixels.