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Encoding method, decoding method and device

An encoding method and encoding technology, which are applied in the fields of encoding methods, decoding methods and devices, can solve the problems of encoding compression performance loss, etc., and achieve the effects of reducing encoding loss, improving efficiency and rationality, and increasing encoding speed

Active Publication Date: 2019-07-23
HUAWEI TECH CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] However, there is a strong correlation between the point cloud data of consecutive frames
The above method only processes each frame of point cloud data separately, resulting in loss of encoding and compression performance

Method used

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  • Encoding method, decoding method and device
  • Encoding method, decoding method and device

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Embodiment Construction

[0065] The encoding method, decoding method and device provided in the embodiments of the present application aim to solve the current technical problem of loss of encoding and compression performance caused by separate processing of each frame of point cloud data.

[0066] The following briefly introduces the existing point cloud data processing methods. It involves four stages, namely: point cloud data segmentation stage, point cloud data packaging (also known as packing) stage, side information encoding stage and side information decoding stage.

[0067] (1) Point cloud data segmentation stage

[0068] The point cloud data is segmented according to preset rules to obtain multiple point cloud blocks (also called patches). Among them, each point cloud block is a connected area, and any two point cloud blocks have no overlapping area.

[0069] Exemplary, figure 1 A schematic diagram of the existing segmented point cloud data. figure 1 The left side shows point cloud data i...

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Abstract

The embodiment of the invention provides an encoding method, a decoding method and a device. The encoding method comprises the following steps: determining X first point cloud blocks in M first pointcloud blocks of a current frame, wherein the X first point cloud blocks and the X second point cloud blocks have a preset matching relationship, the X second point cloud blocks are contained in the previous frame of the current frame, the X is smaller than or equal to M, and both X and M are positive integers; acquiring side information of the X first point cloud blocks and side information of theX second point cloud blocks; obtaining X groups of edge information difference values according to the edge information of the X first point cloud blocks and the edge information of the X second point cloud blocks; and encoding the difference value of the X groups of side information. According to the coding method provided by the embodiment of the invention, the compression performance of codingis improved by utilizing the relevance of the front and rear frames of point cloud data.

Description

technical field [0001] The embodiments of the present application relate to the technical field of image processing, and in particular, to an encoding method, a decoding method, and a device. Background technique [0002] With the continuous development of computer technology and three-dimensional (Three Dimensions, 3D) sensor technology, the collection of point cloud data is becoming more and more convenient, the quality of the collected data is getting higher and higher, and the data scale is getting larger and larger. The so-called point cloud or point cloud data refers to the collection of point data on the product appearance surface obtained by measuring instruments. In the face of massive point cloud data, how to effectively compress, encode, store and transmit point cloud data with high quality becomes very important. [0003] When processing point cloud data, a common processing method is as follows: first, segment the point cloud data of the current frame to obtain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/13H04N19/176H04N19/90
CPCH04N19/90H04N19/13H04N19/176H04N19/597G06T2207/10028H04N19/503H04N19/70G06T9/001G06T9/004
Inventor 张德军
Owner HUAWEI TECH CO LTD
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