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A low-complexity video signal coding and processing method

A video signal, low-complexity technology, applied in the direction of digital video signal modification, image communication, electrical components, etc., can solve the problem of not being able to fully express the prediction accuracy, so as to reduce coding complexity, reduce complexity, and improve coding. effect of speed

Active Publication Date: 2021-01-19
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

In terms of video coding control, CU decisions are modeled as state-action pairs, however, the joint accuracy of CU predictions across different depths cannot fully express the overall prediction accuracy across CUs

Method used

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  • A low-complexity video signal coding and processing method
  • A low-complexity video signal coding and processing method
  • A low-complexity video signal coding and processing method

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Embodiment Construction

[0022] The present invention will be described in more detail below in conjunction with the accompanying drawings and embodiments.

[0023] The invention discloses a low-complexity video signal encoding processing method, which combines figure 1 and figure 2 As shown, it includes the following steps:

[0024] Step S1, obtain the encoded CU t , where t represents the position L of the coding unit CU on the recursive coding tree unit CTU quadtree ID ;

[0025] Step S2, judging the current position L ID Whether it is greater than 20, if so, execute step S5; if not, extract the current coded CU t The eigenvector x t, then execute step S3;

[0026] Step S3, use the CU decider ActNN to judge the encoded CU t split decision, the output of the CU decider ActNN is u(t), and the u(t) is used to judge whether to divide the current coded CU t ;

[0027] Step S4, define the threshold Ф of u(t), judge whether u(t) is greater than the threshold Ф, if u(t)≥Ф, the current coded CU ...

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Abstract

Disclosed is a low-complexity video signal coding processing method. The method comprises: step S1, acquiring a code CUt; step S2, determining whether the LID of the current position is greater than 20 or not, and if so, executing step S5; if not, extracting a feature vector xt of the current code CUt, and then executing step S3; step S3, determining a division decision of the code CUt by using a decision maker ActNN; step S4, defining a threshold value Ф of u (t), and if u (t) is greater than or equal to Ф, determining that the division decision of the current code CUt is "stop division", and terminating the rate distortion cost (RD cost) comparison process of the current code CUt in advance, and executing step S2 after adding one to LID, and if u (t) is smaller than Ф, then determining that the division decision of the current code CUt is "continue division", and the code CUt depth subjected to rate distortion cost (RD cost) comparison being increased by one, and executing step S2 in sequence; and step S5, finishing division. According to the present invention, the coding complexity can be effectively reduced, and thus the coding speed is improved.

Description

technical field [0001] The invention relates to a video signal processing method, in particular to a low-complexity video signal encoding processing method. Background technique [0002] High Efficiency Video Coding (HEVC) is a standard developed by the Joint Collaborative Team on Video Coding (JCT-VC). Compared with H.264 / AVC, HEVC reduces the bit rate by 50% while maintaining the same video quality. HEVC supports 4K Ultra High Definition (UHD) with a resolution of 3840×2160 or 4096×2160 to 8K UHD with a resolution of 8192×4320. However, the deployment complexity of HEVC limits its wide application in real-time application scenarios, such as online video broadcasting, real-time video chatting, and mobile platforms with limited power and computing resources, such as smartphones, drones, etc. Reducing coding complexity with acceptable coding performance loss has received extensive attention in both academia and industry. [0003] Compared with H.264 / AVC, the recursive codi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/14H04N19/147H04N19/119H04N19/96
CPCH04N19/119H04N19/14H04N19/147H04N19/96
Inventor 李娜张云
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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