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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 effect of reducing encoding loss and improving encoding performance

Active Publication Date: 2021-09-07
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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
  • 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

Embodiments of the present application provide an encoding method, a decoding method, and a device. Wherein, the encoding method includes: determining X first point cloud blocks in the M first point cloud blocks of the current frame; there is a preset matching relationship between the X first point cloud blocks and the X second point cloud blocks, X second point cloud blocks are included in the previous frame of the current frame; wherein, X is less than or equal to M, and both X and M are positive integers; obtain side information of X first point cloud blocks and X second point cloud blocks The side information of the point cloud block; according to the side information of X first point cloud blocks and the side information of X second point cloud blocks, X groups of side information difference values ​​are obtained; and the X group of side information difference values ​​are encoded. The encoding method provided in the embodiment of the present application utilizes the correlation between two frames of point cloud data before and after to improve the compression performance of encoding.

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 Patents(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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