Thomson Licensing

Interdigital Madison Patent Holdings

Aurelie Martin

Edouard Francois

Dominique Thoreau

Jerome Vieron

Philippe Bordes

Fabien Racape

Christine Guillemot

Safa Cherigui

Jean-Jacques Fuchs

The method includes determining at least one candidate motion vector associated with a neighboring block of said current block. A prediction motion vector is determined from the candidate motion vector, and the current block is coded from the prediction motion vector. The prediction motion vector is determined according by determining, for the candidate motion vector, a corrective motion vector so as to minimize a distortion calculated between the neighoboring block successively coded and reconstructed and a prediction block motion compensated by the at least one candidate motion vector modified by the corrective motion vector. The prediction motion vector is then determined from the candidate motion vector modified by the corrective motion vector.

Motion vector prediction and refinement using candidate and correction motion vectors

A method for coding a block of pixels is disclosed. The method comprises the following steps: According to the invention, the current threshold value is determined or coded from neighboring reconstructed pixels of the current block.

Spatial prediction technique for video coding

A method for coding a block of pixels is described. The coding method comprises: The determination of the prediction block comprises the following steps:

Method for coding and reconstructing a pixel block and corresponding devices

The process comprising splitting of an image into blocks, intra coding of a current block using spatial prediction based on a matching pursuit algorithm selecting, from a dictionary of atoms, the atom the most correlated with a causal neighborhood of the current block, is characterized in that it performs the following steps: &#x2014; determination of the two dimensional shift between the causal neighborhood and the selected atom, &#x2014; generation of at least, a new phased atom taking into account the values of the two dimensional spatial shift, &#x2014; use of this new atom for intra prediction, according to the matching pursuit algorithm, if better correlated than the selected one. Application to video data compression.

Process for coding and decoding video data of a sequence of images and corresponding encoder and decoder

A method for coding a current block is disclosed. The method comprises an iterative step of decomposition into atoms of a first dictionary of a vector of data comprising at least reconstructed image data associated with pixels situated in a causal neighboring area of a current block. At each iteration, the step of decomposition into atoms comprises the following steps for:

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Paris, France

Aurelie Martin