Anti-Intra-Frame Error Propagation Method in Fast Video Coding

An error transfer and video coding technology, applied in the field of video coding, which can solve the problems of degradation of coding quality, affecting the overall RD performance of video frames, etc.

Active Publication Date: 2019-12-17
FUZHOU UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

When an error occurs in the reference CU, the coding quality of the current CU will also decrease, which will affect the overall RD performance of the video frame.

Method used

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  • Anti-Intra-Frame Error Propagation Method in Fast Video Coding

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Embodiment Construction

[0031] The invention of this aspect will be further explained below in conjunction with the accompanying drawings and specific embodiments.

[0032] The present invention provides a method for preventing intra-frame error transmission in fast video coding, which includes the following steps: Step S1: change the number of reference modes of the current CU, and record the predicted partition modes obtained under different reference modes; Step S2: convert each Comparing the predicted segmentation mode with the optimal segmentation mode, calculating the accuracy of the predicted optimal mode under different reference modes, so as to determine the uncertainty of each region; Step S3: According to the different influences of different regions on the coding quality, calculate The error transmission coefficient of each area; Step S4: When starting CU encoding, extract the coordinate information of the current CU, and determine the area to which it belongs according to the coordinates;...

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Abstract

The invention provides an anti-intra-frame error transfer method in fast video coding, for solving the problem of intra-frame CU error transfer in fast coding. The method disclosed by the invention includes the following steps: firstly, studying the problem of uncertainty of CUs in different regions in frames in a fast-coded video; secondly, deducing an influence relationship of the CUs on the overall coding quality based on the uncertainty of CU prediction; and finally, adjusting the radius allocated to an original CU according to an error transfer coefficient of each region. Thereby, the rate coding distortion cost can be reduced without increasing the coding time basically, and the coding quality can be improved.

Description

technical field [0001] The invention belongs to the technical field of video coding, and in particular relates to a method for preventing intra-frame error transmission in fast video coding. Background technique [0002] Video coding refers to performing predictive coding on the current CU using the coded CU by utilizing the correlation between the time domain and the space domain of the video. The coding quality of the spatio-temporal reference CU directly affects the coding of the current CU. When an error occurs in the reference CU, the encoding quality of the current CU will also decrease, which will affect the overall RD performance of the video frame. The anti-error transfer algorithm proposed by the present invention uses the error transfer coefficient to adjust the original algorithm according to the different influences of CUs in different regions on the overall encoding quality, thereby improving the overall encoding quality and reducing video distortion. Conten...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/105H04N19/147
CPCH04N19/105H04N19/147
Inventor 徐艺文李棋赵铁松陈锦铃庄重文
Owner FUZHOU UNIV
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