Intel Corporation

Nader Mahdi

Faouzi Kossentini

Chekib Nouira

Hassen Guermazi

Foued Ben Amara

Amir Naghdinezhad

Omar Khlif

Techniques related to transform coefficient shaping for video encoding are discussed. Such techniques include applying weighting parameters from one or more perceptually-designed matrices of weighting parameters to blocks of transform coefficients to generate weighted transform coefficients and encoding the weighted transform coefficients into a bitstream. The process may be based on sets of perceptually designed matrices of weighting parameters. Classifier outputs may be used to select from the set of perceptually designed matrices a subset of matrices to work with. The latter may be used in a synthesis procedure to develop the final weighting matrix to be used is shaping the transform coefficients.

Human visual system optimized transform coefficient shaping for video encoding

Techniques related to video encoding are discussed that, for each block of input video, select an individual partitioning and coding mode selection technique from multiple such selection techniques. For a picture, the selection algorithm takes as input scores for individual blocks, costs of the various partitioning and coding mode selection techniques, and various detector outputs. The selection algorithm provides as output a partitioning and coding mode selection technique for each block in picture. The algorithms selection is such that the overall cost of the selected algorithms in the picture is as close as possible to a given picture budget. Furthermore, a partitioning and coding mode selection algorithms, binary depth partitioning (BDP), is discussed. For a block, BDP provides fast convergence to a partitioning and associated coding modes first evaluating intermediate partitioning options and converging on the final partitioning by evaluating either larger of smaller partitions.

Partitioning and coding mode selection for video encoding

Techniques related to video encoding that provide for a decoupled prediction and coding structure for improved performance are discussed. Such techniques include determining final partitioning decisions for blocks of a picture by evaluating intra modes for candidate partitions by comparing the candidate partitions to intra predicted partitions generated using only original pixel samples and evaluating inter modes for the candidate partitions by comparing the candidate partitions to search partitions including original pixel samples and encoding using the final partitioning decision.

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Maple Ridge, Canada

Nader Mahdi