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Video coding method

A video coding and coding technology, applied in the field of video coding, can solve problems such as reducing the bit rate, and achieve the effect of reducing the bit rate

Active Publication Date: 2013-04-03
SHANGHAI YINGLIAN SOMATOSENSORY INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this model does not fully consider human subjective visual characteristics, and still uses the traditional distortion measurement method, which is difficult to effectively reduce the bit rate under the condition of guaranteeing human subjective video quality

Method used

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Embodiment Construction

[0028] specific implementation plan

[0029] In order to make the object, technical solution and advantages of the present invention clearer, the video coding method according to an embodiment of the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0030] In the present invention, a distortion measurement method that fully characterizes human subjective visual characteristics is used, and considering that the characteristics of human selective attention will bring different distortion sensitivities to images in different regions, dynamically adjust each coded macroblock the weight of. Specifically: in a video sequence, people pay different attention to different regions. Humans have a higher sensitivity to distortion in areas of high interest. Therefore, in the pre...

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Abstract

The invention provides a video coding method, which comprises the following steps of: 1) determining video distortion D between video coded by a coding mode to be selected according to the attention degree of each macro block and original video; 2) calculating a rate distortion optimized (RDO) model according to the video distortion D; and 3) performing video coding according to the RDO model. Bythe method provided by the invention, subjective vision characteristics of a user are taken into account, and a code rate can be effectively decreased under the condition of ensuring the subjective video quality of the user.

Description

technical field [0001] The invention relates to the processing of digital video signals, in particular to a video coding method. Background technique [0002] In recent years, with the rapid development of communication technology and network media, video data has exploded. Although the computing power of multimedia processors is continuously enhanced, the storage capacity is continuously increased, and the network bandwidth is continuously improved, they still cannot meet the ever-increasing needs of users. How to use limited bandwidth resources to satisfy users' requirements for video quality to the greatest extent has become a very meaningful research topic. [0003] The video signal has a huge amount of data, and it must be compressed before it can be transmitted and stored in practical applications. Therefore, what people usually see is the reconstructed video signal after decompression. The function of the bit rate control algorithm is to make the video compression ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/26H04N7/30H04N19/126H04N19/146H04N19/176H04N19/19
Inventor 苏荔王茜黄庆明秦磊蒋树强
Owner SHANGHAI YINGLIAN SOMATOSENSORY INTELLIGENT TECH CO LTD
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