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Coding mode selection method, device and coder

An encoding mode and optimal encoding mode technology, applied in the field of video encoding, can solve the problems of low encoding mode selection efficiency, large computing resources, encoder consumption, etc., to improve mode selection efficiency, ensure encoding quality, and reduce hardware requirements. Effect

Active Publication Date: 2014-04-02
HUAWEI TECH CO LTD
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Problems solved by technology

[0004] The embodiment of the present invention provides a coding mode selection method, device, and encoder to solve the problem that the prior art requires the encoder to consume a large amount of computing resources, resulting in low efficiency of coding mode selection

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  • Coding mode selection method, device and coder
  • Coding mode selection method, device and coder

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Embodiment Construction

[0048] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0049] see figure 1 , is a flowchart of an embodiment of the encoding mode selection method of the present invention:

[0050] Step 101: For each coding layer of the coding unit, obtain the candidate partitioning methods of the coding layer from all partitioning methods of the coding layer through the fast RDO algorithm, and determine the best partitioning method of the coding layer from the candidate partitioning methods through the RDO algorithm Way.

[0051] In ...

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Abstract

The embodiment of the invention discloses a coding mode selection method, a device and a coder. The method comprises the steps of obtaining candidate dividing methods of coding layers from all dividing methods of the coding layers through a quick RDO (Rate Distortion Optimization) algorithm for each coding layer of a coding unit, and determining optimum dividing methods of the coding layers from the candidate dividing methods through an RDO algorithm; selecting an optimum coding mode of the coding unit according to RDCost (Rate Distortion Cost) corresponding to the optimum dividing method of adjacent coding layers. Since the candidate dividing methods are obtained by adopting the quick RDO algorithm within the same coding layer in the embodiment of the invention and the computation complexity of the quick RDO algorithm is lower than the computation complexity of the RDO algorithm, the computation resource overhead of the coder can be saved; and between the adjacent coding layers, since the optimum coding mode of the coding unit can be selected still through the RDO algorithm, the mode selecting efficiency of the coder is improved and the coding quality can also be guaranteed.

Description

technical field [0001] The present invention relates to the technical field of video coding, in particular to a coding mode selection method, device and coder. Background technique [0002] High-efficiency video coding (HEVC) is a new generation of video compression standards under study, mainly for high-definition and ultra-high-definition video images. The application of HEVC can reduce the bit rate of the video stream while ensuring the same video image quality; and while improving the compression efficiency, it allows the encoder to appropriately increase the encoding complexity. When selecting a coding mode for the current coding unit (Coding Unit, CU) based on the HEVC standard, the video encoder can use the rate-distortion optimization (Rate Distortion Optimization, RDO) algorithm to traverse and calculate all the blocks under each mode type of the current CU The rate distortion cost (Rate Distortion Cost, RDCost) corresponding to the mode, and select the candidate m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/156H04N19/103H04N19/187H04N19/147
Inventor 郭姗宋杨王振威
Owner HUAWEI TECH CO LTD
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