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Method for high-performance video interframe coding based on time domain relevance and transcoder thereof

A coding method and correlation technology, applied in high-performance video coding inter-frame mode determination, video coding inter-frame mode field, can solve problems such as increased computational complexity, reduce computational complexity, reduce the number of traversal coding layers, and reasonably The effect of removing redundancy

Active Publication Date: 2014-10-22
SICHUAN UNIV
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Problems solved by technology

The main goal of HEVC is to significantly improve the compression efficiency while reducing the bit rate by about 50%, but this also brings about an increase in computational complexity

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  • Method for high-performance video interframe coding based on time domain relevance and transcoder thereof
  • Method for high-performance video interframe coding based on time domain relevance and transcoder thereof
  • Method for high-performance video interframe coding based on time domain relevance and transcoder thereof

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Embodiment Construction

[0032] The present invention will be further described in detail below in conjunction with the examples. It must be pointed out that the following examples are only used to further illustrate the present invention and cannot be interpreted as limiting the protection scope of the present invention. Content, making some non-essential improvements and adjustments to the present invention for specific implementation shall still belong to the protection scope of the present invention.

[0033] The fast interframe coding method of the present invention compares with the interframe coding method of the HM9.0 standard, and the comparison process is as follows:

[0034] 1. Open the programs of the two methods at the same time and set the same configuration file. The reference software selects HM9.0, and the quantization step (QP) value is 22, 27, 32, and 37 respectively. The present invention will be compared with the method of the reference software algorithm HM9.0 of the HEVC video c...

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Abstract

The invention provides a method for high-performance video interframe coding based on time domain relevance and a transcoder thereof. The method mainly comprises coding mode division and prediction mode selection. In the coding mode division, by comparing a current frame with a last frame through a frame difference mode, movement characteristics of a current coding block are obtained, CU division is performed in advance; and in prediction mode selection, PU prediction modes under the determined CU depth are traversed. According to the method, condition judgment is performed according to the gray value difference between the current coding block and a reference block, coding depth information of a current coding unit is determined in advance before coding, interframe prediction coding times is reduced, and accordingly computation complexity at the coding end is effectively reduced. Experimental results show that on the conditions that the coding efficiency loss and the peak signal to noise ratio (PSNR) loss are very small, compared with an interframe prediction method in the HM9.0 standard, the method greatly reduces coding time.

Description

technical field [0001] The invention relates to the technical problem of video coding inter-frame mode in the field of image communication, in particular to a high-performance video coding inter-frame mode judging method. Background technique [0002] In recent years, with the rapid development of video services, people's demand for viewing high-definition video is also increasing. The current mainstream video compression coding standard H.264 can no longer adapt to high-definition video transmission under high data volume. Under this trend, a new generation of video compression coding standard HEVC came into being. The main goal of HEVC is to significantly improve the compression efficiency while reducing the bit rate by about 50%, but this also brings about an increase in computational complexity. Therefore, how to reduce the computational complexity of encoding while ensuring the quality of video encoding has become a research hotspot in the field of video encoding. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/109H04N19/105H04N19/147
Inventor 何小海彭欣李向群何娟熊淑华滕奇志
Owner SICHUAN UNIV
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