SHVC fast coding method combining coding depth estimation and Bayesian decision

A technology of fast coding and coding depth, which is applied in the field of video coding, can solve the problem of high complexity of SHVC video coding, and achieve the effect of reducing complexity and fast coding

Active Publication Date: 2020-01-24
HANGZHOU DIANZI UNIV
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Problems solved by technology

[0004] The present invention aims at the shortcomings of existing SHVC video coding with high comple

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  • SHVC fast coding method combining coding depth estimation and Bayesian decision
  • SHVC fast coding method combining coding depth estimation and Bayesian decision
  • SHVC fast coding method combining coding depth estimation and Bayesian decision

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[0132] The present invention will be further described below with reference to the drawings and implementation examples.

[0133] The SHVC fast inter-frame coding method based on Bayesian decision, using the SHM12 model of SHVC video coding, the test conditions refer to the general test conditions of JCT-VC (JCTVC-O1009), and the low-latency coding configuration file encoder_lowdelay_scalable.cfg of the SHM12 model is used. .

[0134] The specific implementation steps refer to the attached Figure 4-Figure 12 .

[0135] The flow chart of the overall method of the present invention is as follows Figure 7 Shown. First, perform standard SHVC encoding on the video sequence offline, and count the adjacent blocks (left, top, top left, top right) of the current CTU of the enhancement layer, such as Figure 4 Shown) Depth and Dep Ner_SUM , The depth Dep of the corresponding position CU of the base layer BL , And the depth range of the current CTU block [Dep EL_min , Dep EL_max ] The di...

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Abstract

The invention discloses an SHVC fast coding method combining coding depth estimation and Bayesian decision, and the method is implemented in a way that an original coding method is maintained at a base layer, and a fast coding method is adopted at an enhancement layer. The SHVC enhancement layer fast coding method comprises a coding tree unit (CTU) depth range estimation method, a coding unit (CU)fast division method based on minimum risk Bayesian decision and a prediction unit (PU) fast mode selection method based on maximum probability Bayesian decision. According to the method, the complexity of CU depth division and PU mode selection in SHVC enhancement layer coding is greatly reduced, and the coding speed of SHVC is effectively improved on the premise of maintaining the coding compression efficiency.

Description

technical field [0001] The invention belongs to the technical field of video coding, and in particular relates to an SHVC fast coding method combined with coding depth estimation and Bayesian judgment. Background technique [0002] Since there are devices with different decoding capabilities in user terminals, it is necessary to transmit multiple channels of video to meet the needs of different users. The same piece of video needs to be coded multiple times to form videos with different resolutions, and multiple transmissions result in a waste of bandwidth and a large amount of redundancy. In order to solve the current situation of data redundancy, devices with different processing capabilities and complex heterogeneous network environment in user terminals, in 2014, the Video Coding Expert Group under the International Telecommunication Union Communication Standardization Organization and the Dynamic Image Code under the International Electrotechnical Commission The expert...

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Application Information

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IPC IPC(8): H04N19/34
CPCH04N19/34
Inventor 陆宇黄旭东黄晓峰殷海兵刘华平
Owner HANGZHOU DIANZI UNIV
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