MOTION-BASED HYBRID CHROMA SUBSAMPLING

Abstract: a system utilizes a hybrid chroma subsampling process in which a source device generates a plurality of motion layers from an input image of a video stream. each motion layer is associated with a different motion criterium and includes data from the image only for those regions of pixels that meet the corresponding motion criterium. the source device generates each motion layer with a different degree of chroma subsampling based on the motion criterium associated with the motion layer. the resulting plurality of motion layers are transmitted to a sink device. the sink device decodes the motion layers and then generates a composite image from the resulting motion layers, the composite image representing the input image with different degrees of chroma subsampling for different regions based on the degree of motion in each region.

Inventor(s): Gennadiy Kolesnik, Isabelle Elizabeth Knott, Mikhail Mironov

CPC Classification: H04N19/132 (Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking)

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