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Video data encoding method and device, computer equipment and storage medium

A technology of video data and encoding method, applied in the field of video encoding and decoding, can solve problems such as low encoding and decoding efficiency, and achieve the effect of improving the gain

Pending Publication Date: 2021-01-05
TENCENT AMERICA LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When encoding and decoding the attributes of the point cloud, the currently used predictive transformation has low encoding and decoding efficiency, and it is necessary to find an effective technical solution to improve it.

Method used

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  • Video data encoding method and device, computer equipment and storage medium
  • Video data encoding method and device, computer equipment and storage medium
  • Video data encoding method and device, computer equipment and storage medium

Examples

Experimental program
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Embodiment Construction

[0031] Figure 1A is a schematic diagram illustrating a method for generating a level of detail (LoD) in a graph-based point cloud compression (G-PCC, Graph-based Point Cloud Compression).

[0032] refer to Figure 1A , in the current G-PCC attribute codec, the LoD (ie, group) of each 3D point (eg, P0-P9) is generated based on the distance of each 3D point, and then the prediction is made based on the order 110 of the LoD, for each The attribute values ​​of the 3D points in the LoD are encoded instead of the original order 105 of the 3D points for prediction. For example, the attribute value of 3D point P2 is predicted by computing a distance-based weighted average of 3D points P0, P5 and P4 (which were encoded or decoded before 3D point P2).

[0033] Current anchoring methods in G-PCC, as described below.

[0034] First, calculating the variability of the neighborhood of the 3D point, one can check how neighboring values ​​differ, and if the variability is below a threshold,...

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Abstract

A method of encoding video data corresponding to a point cloud by at least one processor, the method comprises the steps: obtaining a plurality of transform coefficients corresponding to attributes ofthe point cloud; and encoding the plurality of transform coefficients to generate an embedded bitstream, including iterating over a plurality of bit-planes of the plurality of transform coefficientsto process all points in the point cloud.

Description

[0001] Incorporate by reference [0002] This application claims priority to U.S. Provisional Application No. 62 / 871,079, filed July 5, 2019, entitled "Technology and Apparatus for Scalable Improvement in Point Cloud Attribute Codec" and filed on July 2020 US Application No. 16 / 919,996, entitled "Method and Apparatus for Scalable Upgrading in Point Cloud Attribute Encoding and Decoding," filed on March 2, the entire contents of which are incorporated herein by reference. technical field [0003] The embodiments of the present application relate to video coding and decoding technologies, and in particular, to a video data coding method, device, computer equipment, and storage medium. Background technique [0004] Advanced three-dimensional (3D) representations of the world enable more immersive interaction and communication. They also allow machines to understand, interpret and navigate our world. 3D point clouds have become an enabling representation of this type of inform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/60H04N19/147H04N19/96H04N19/61H04N19/42H04N19/117
CPCH04N19/60H04N19/147H04N19/96H04N19/61H04N19/42H04N19/117
Inventor 芮世薰沃索基阿拉什刘杉
Owner TENCENT AMERICA LLC