POINT CLOUD ATTRIBUTE CODING METHOD, POINT CLOUD ATTRIBUTE DECODING METHOD AND TERMINAL

• Main Authors: YANG, Fuzheng, DAI, Na, LV, Zhuoyi, LU, Jingyun, ZHANG, Wei
• Format: Patent
• Language: Chinese; English; French
• Published: 02.03.2023
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

The present application discloses a point cloud attribute coding method, a point cloud attribute decoding method and a terminal, and belongs to the technical field of point cloud processing. The point cloud attribute coding method comprises: acquiring a point cloud to be coded; on the basis of the number of coded points included in said point cloud, volume information of a bounding box corresponding to said point cloud and the ranking of each coded point, dividing said point cloud into at least one coded point cloud block; for each coded point cloud block that comprises at least two coded points, dividing the coded point cloud block into N coded point cloud groups on the basis of the number of coded points included in the coded point cloud block, and a preset maximum transformation order; performing transformation coding and quantification processing on first residual information corresponding to a first target coded point cloud group, so as to obtain a quantified first transformation coefficient; and perform