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Method, device, storage medium and terminal for predicting geometric partition mode based on codec terminal

A technology of dividing mode and prediction method, applied in the computer field, can solve the problems of large number of bits, high complexity, affecting GEO performance, etc., to achieve the effect of reducing complexity, improving compression performance, and reducing coding overhead

Active Publication Date: 2022-06-03
PEKING UNIV
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  • Claims
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AI Technical Summary

Problems solved by technology

Problems existing in the prior art (1) Transmitting the syntax element of GEOIdx requires too many extra bits, which seriously affects the performance of GEO
If there are 128 modes, it is necessary to write the value from 0 to 127 into the code stream, and it needs to consume 7 bits to represent
(2) For all CUs, all possible GEO partition modes are tried on the encoding side, and the complexity is high

Method used

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  • Method, device, storage medium and terminal for predicting geometric partition mode based on codec terminal
  • Method, device, storage medium and terminal for predicting geometric partition mode based on codec terminal
  • Method, device, storage medium and terminal for predicting geometric partition mode based on codec terminal

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Embodiment Construction

[0087] The following description and drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them.

[0088] It should be understood that the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0089] Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with some aspects of the invention, as recited in the appended claims.

[0090] The following ...

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Abstract

The present invention discloses a codec-based geometric division mode prediction method, device, storage medium and terminal. The method includes: performing optimal mode prediction on the current coding block, and selecting the most probable mode set from the total mode set ; Make a mode decision in the most probable mode set; write the index of the optimal mode obtained by the final decision in the most probable mode set into the code stream. Make mode decisions from the total mode set, use an identification bit to identify whether the optimal mode obtained by the final decision is in the most probable mode set, if it is in the most probable mode set, write its index in the most probable mode set codestream, otherwise write its index in the total mode set into the codestream. Therefore, by adopting the embodiment of the present application, it is possible to reduce the encoding overhead of the division mode, improve the compression performance, and reduce the complexity of the encoding end.

Description

technical field [0001] The present invention relates to the field of computer technology, and in particular, to a method, device, storage medium and terminal for predicting a geometric division mode based on an encoder and decoder. Background technique [0002] Video coding mainly includes intra-frame prediction, inter-frame prediction, transformation, quantization, entropy coding, and loop filtering. Inter-frame prediction technology utilizes the temporal correlation between adjacent frames of the video, uses the previously encoded reconstructed frame as a reference frame, and predicts the current frame (the frame currently being encoded) through motion estimation and motion compensation. Thereby, the temporal redundancy information of the video is removed. For a frame of image, the entire frame of image will not be directly processed in the encoding process, and it needs to be divided into a large coding area (Coding Tree Unit, CTU), such as 64x64, 128x128 size. Each CTU...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/176H04N19/146H04N19/52H04N19/159
CPCH04N19/176H04N19/146H04N19/52H04N19/159
Inventor 马思伟孟学苇王苫社
Owner PEKING UNIV
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