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Hardware-friendly intra-frame coding block division method and device and storage medium

A technology of intra-frame coding and block division, which is applied in the field of intra-frame coding block division, can solve the problems of data dependence and delay, huge time delay and memory read and write pressure, and achieve the convenience of software and hardware parallelism, reduce time delay, and ensure quality Effect

Active Publication Date: 2020-11-10
PEKING UNIV SHENZHEN GRADUATE SCHOOL
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Problems solved by technology

[0004] The embodiment of the present application provides a hardware-friendly intra-frame coding block division method, which solves the data dependence generated by the selection of intra-frame coding block division mode in the prior art and del

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  • Hardware-friendly intra-frame coding block division method and device and storage medium
  • Hardware-friendly intra-frame coding block division method and device and storage medium
  • Hardware-friendly intra-frame coding block division method and device and storage medium

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Embodiment Construction

[0058] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0059] The main solution of the embodiment of the present invention is to calculate the texture difference and color difference between the sub-coding units according to the preset division structure for the intra-frame coding block used for training, and obtain the training features of the decision tree classification model; Encoding the intra-frame coding block to obtain the correct division mode, and obtaining a training label corresponding to the training feature; combining the training feature and the training label to construct a training set, and using the training set to train to obtain multiple decisions A tree classification model: using the decision tree classification model according to a preset discrimination process to obtain a division mode of the intra-coded block to be divided. It solves the technical...

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Abstract

The invention discloses a hardware-friendly intra-frame coding block division method, and the method comprises the steps: calculating the texture difference degree and color difference degree betweensub-coding units of an intra-frame coding block for training according to a preset division structure, and obtaining the training features of a decision tree classification model; encoding the intra-frame encoding block to obtain a correct division mode, and obtaining a training label corresponding to the training feature; constructing a training set by combining the training features and the training labels, and training by utilizing the training set to obtain a plurality of decision tree classification models; and according to a preset discrimination process, using the decision tree classification model to obtain a division mode of the intra-frame coding block to be divided. The technical problems of data dependence and delay generated by intra-frame coding block division mode selectionand huge time delay and memory read-write pressure generated in a hardware environment are solved, and the technical effects of facilitating software and hardware parallelism and obtaining a divisionmode at a time are achieved.

Description

technical field [0001] The invention relates to video codec technology, in particular to a hardware-friendly method for dividing intra-frame coding blocks. Background technique [0002] When selecting the best division mode for the unit to be divided, the encoder first determines the division mode that can be selected for the unit according to the restriction conditions. Then the encoder sequentially uses the selectable division mode to perform subsequent encoding work such as intra prediction, quantization, transformation, entropy coding, etc. on the current coding unit, and then obtains the precoding information of the division mode. After obtaining the precoding information of all division modes, the best division mode is selected from the pool of division modes to be selected according to a rate-distortion optimization (Rate-Distortion Optimization, RDO) strategy. [0003] Existing RDO-based block partition mode selection schemes need to wait for all allowed partition m...

Claims

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Application Information

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IPC IPC(8): H04N19/103H04N19/124H04N19/13H04N19/176H04N19/96
CPCH04N19/96H04N19/176H04N19/13H04N19/124H04N19/103
Inventor 高伟袁航
Owner PEKING UNIV SHENZHEN GRADUATE SCHOOL
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