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Quick coding method for HEVC (high efficiency video coding)

A fast encoding and encoding technology, applied in the field of video encoding and decoding, can solve the problems of reducing the traversal range and not considering the difference of video content and its sequence

Active Publication Date: 2014-01-22
NINGBO UNIV
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Problems solved by technology

Shen et al. adopted the joint prediction method of space-time domain to predict the CU depth value of the current LCU through the weighted method of the CU depth value of the adjacent LCU, so as to determine the corresponding depth traversal interval. Although this method greatly reduces the traversal range , but does not take into account the differences in video content and its sequence, resulting in a considerable room for improvement in the predicted depth traversal interval

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  • Quick coding method for HEVC (high efficiency video coding)
  • Quick coding method for HEVC (high efficiency video coding)
  • Quick coding method for HEVC (high efficiency video coding)

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Embodiment Construction

[0049] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0050] A kind of HEVC fast coding method that the present invention proposes, its overall realization block diagram is as follows figure 2 As shown, it includes the following steps:

[0051] ① Define the current frame to be processed in the high-definition video as the current frame.

[0052] In high-definition video, there are mainly two groups of pictures (GOP, Group of Pictures): I frame (Intra frame) picture group and non-I frame picture group. Each group contains 8 non-I frame images. Starting from the first frame (the first I frame image group), an I frame image group appears every 32 frames, that is, there are 4 non-I frame image groups between two adjacent I frame image groups. Group of frame images.

[0053] ② Define the current largest coding unit to be encoded in the current frame as the current largest coding unit.

[0054] ③ ...

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Abstract

The invention discloses a quick coding method for HEVC (high efficiency video coding). A prediction maximum coding unit is subjected to quadtree structure type analysis to quickly obtain a type value which shows the depth traversal interval of the current maximum coding unit; in the process of obtaining the type value, because the current maximum coding unit and an adjacent coded maximum coding unit as well as the maximum coding units with the same coordinate position in a forward-direction reference frame and a backward-direction reference frame have big correlation, the type value of the depth traversal interval of the maximum coding unit is predicted to obtain the type value of the depth traversal interval of the current maximum coding unit; therefore, unnecessary depth traversals in the current maximum coding unit division process are avoided; on the premise of guaranteeing the video quality and the constant code rate, the coding computation complexity is effectively lowered.

Description

technical field [0001] The present invention relates to a video encoding and decoding technology, in particular to an HEVC fast encoding method. Background technique [0002] With the continuous development of network technology and terminal processing capabilities, people have higher and higher requirements for video compression to meet applications in new fields such as remote monitoring, mobile streaming media, portable cameras, and medical imaging. The Joint Collaborative Team on Video Coding (JCT-VC) is working on researching a new generation of High Efficiency Video Coding (HEVC), whose core goal is based on the H.264 / AVC high profile , doubling the compression efficiency. Since HEVC adopts a super-sized quadtree structure coding unit (Coding Unit, CU), prediction unit (Prediction Unit, PU) and transformation unit (Transform Unit, TU) in the coding structure, the compression efficiency is significantly improved. But it also brings an increase in coding complexity. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/00H04N19/114H04N19/147
Inventor 蒋刚毅杨小祥彭宗举郁梅邵枫陈芬朱天之李福翠
Owner NINGBO UNIV
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