ENCODING AND DECODING METHOD, ENCODER AND DECODER Russian patent published in 2024 - IPC G06T9/40 H04N19/91 

FIELD: computer engineering.

SUBSTANCE: processing audio data. The technical result is achieved due to the fact that if the encoding mode is a planar encoding mode, the encoding context information includes planar context information of the current child node, wherein the planar context information is determined in accordance with the occupancy pattern of the current parent node and the occupancy pattern of at least one neighbouring parent node located immediately adjacent to the current parent node, wherein the occupancy pattern includes a distribution of occupied child nodes in the corresponding parent node and the planar context information includes information about the ability of a plane or surface represented by a point cloud to pass through the current child node; and, if the encoding mode is an angular encoding mode, the encoding context information includes planar information of the current parent node and the occupancy of a vertically adjacent parent node adjacent to the current parent node; and entropy encoding the current child node based on the received encoding context information to generate encoded data for the bit stream.

EFFECT: increasing the speed and accuracy of point cloud data compression.

24 cl, 12 dwg