Color component encoding method, encoder and decoder

CN119366178AActive Publication Date: 2025-01-24GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD
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Patent Information

Application Number
CN202380046284.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2022-06-17
Filing Date
2023-06-13
Publication Date
2025-01-24
Estimated Expiration
2043-06-13

AI Technical Summary

Technical Problem

In the existing AVS-GPCC specification, symbols at the residual level of color components are encoded by a bypass method, resulting in unfriendly high-throughput hardware and insufficient coding efficiency and throughput.

Method used

A color component encoding method is proposed, which calculates the difference between the color component of the point to be encoded in the point cloud and the predicted value as the residual level, and encodes the encoding level and symbol flag of the residual level to improve Coding efficiency and throughput.

Benefits of technology

Improved the coding efficiency and throughput of the G-PCC, suitable for the implementation of high throughput hardware, and improved the performance of video processing.

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Abstract

The invention discloses a color component encoding method, an encoder and a decoder. A method is applied to a decoder and includes decoding a coding level of residual levels of three color components for each of a plurality of points in a point cloud, where the residual levels of the color components represent differences between the color components of the point and predicted values of the color components; decoding a set of symbol flags to obtain symbols of respective residual levels for the color components; and reconstructing the point cloud by recovering a residual level of a color component for each of the plurality of points using the decoded coding level and the decoded symbol.
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Citation Information

Patent Citations

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  • Inter-component residual prediction for color attributes in geometry point cloud compression coding

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