Interdigital Madison Patent Holdings, Sas

Fabrice Le Léannec

Franck Galpin

Tangi Poirier

Fabien Racape

Gagan Bihari Rath

Karam Naser

Apparatuses and methods are disclosed for encoding and decoding video data. Techniques are disclosed for encoding a video block, including dividing the video block into coding units and grouping the coding units into at least one group, the grouping comprises associating an indication with each of the coding units that indicates whether a shared coding information is to be used in the encoding of the respective coding unit. Techniques are also disclosed for decoding the video block, including obtaining from a bitstream the coding units and their respective indications. For a coding unit that is associated with an indication that the shared coding information is to be used, the decoding is performed based on the shared coding information; otherwise, the decoding is performed based on coding information parsed from the bitstream.

Parameter grouping among plural coding units for video encoding and decoding

A method for video decoding is disclosed. A directional intra prediction mode is decoded for a block of a picture, the directional intra prediction mode having a direction. Based on the directional intra prediction mode, a first predictor and a second predictor for a sample in the current block are accessed, the first and second predictors being on a line at least approximating the direction. A sample value of the sample is predicted by interpolation using the first and second predictors, responsive to a difference between the second and first predictors, wherein the difference is scaled by at least a ratio that is based on a location of the sample in the block, and wherein a denominator of the ratio is a power of two regardless of the location of the sample. The sample of the block is reconstructed based on the predicted sample value.

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Cesson-Sevigne, France

Fabrice Le Léannec