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Low-complexity video signal coding processing method

A video signal, low-complexity technology, applied in digital video signal modification, image communication, electrical components, etc., can solve problems such as inability to fully express prediction accuracy, reduce coding complexity, increase coding speed, and reduce complexity degree of effect

Active Publication Date: 2019-05-17
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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  • Low-complexity video signal coding processing method
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  • Low-complexity video signal coding 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

The invention discloses a low-complexity video signal coding processing method. The method comprises the steps of S1, obtaining a code CU; S2, judging whether the LID of the current position is greater than 20 or not, and if yes, executing a step S5; if not, extracting a feature vector xt of the current code CUt, and then executing the step S3; step S3, judging a division decision of the code CUtby using a decision maker ActNN; s4, defining a threshold value of u (t), if u (t) is greater than or equal to Phi, determining that the division decision of the current code CUt is' stop division ',terminating the rate distortion cost RD cost comparison process of the current code CUt in advance, and executing the step S2 after adding 1 to the LID; if u (t) is smaller than Phi, the division decision of the current code CUt is' continuous division ', the code CUt depth subjected to rate distortion cost RD cost comparison is increased by 1, and the step S2 is executed in sequence; s5, finishing division. According to the invention, the coding complexity can be effectively reduced, and 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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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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