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Error elimination of compressed video transmission based on H.264

A video transmission and bit error technology, which is applied in the direction of digital video signal modification, image communication, electrical components, etc., can solve the problems of complex implementation mechanism, complex algorithm, and aggravated bit error diffusion, so as to improve the quality of compressed video transmission and avoid error The effect of code diffusion

Inactive Publication Date: 2006-11-01
SNAPTRACK
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Problems solved by technology

[0018] In practical application, the above scheme has the following problems: the above error concealment method can only temporarily cover the distortion caused by the error, and the effect of the simple method is not good, the complex method has a large amount of calculation, and the cover substitution will also increase the error code diffusion;
[0019] The implementation mechanisms of the above-mentioned bit error diffusion suppression methods are relatively complicated. In addition to increasing the network burden, the algorithm is too complex to be conducive to real-time processing applications. In addition, the influence of error diffusion cannot be completely removed, resulting in a decline in the quality of the restored image.
[0020] The main reason for this situation is that the alternative mechanism adopted by the independent error concealment method will cause error diffusion; the error diffusion suppression method requires a complex mechanism or an additional feedback channel, which consumes system processing resources and network bandwidth resources

Method used

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  • Error elimination of compressed video transmission based on H.264
  • Error elimination of compressed video transmission based on H.264
  • Error elimination of compressed video transmission based on H.264

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Embodiment Construction

[0059] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0060] The present invention starts from two aspects of bit error concealment and bit error diffusion suppression, combines the error bit concealment strategy of the receiving end and the bit error diffusion suppression strategy of the sending end, so as to reduce the video quality loss caused by bit errors as much as possible and avoid error The code causes the purpose of diffusion. For bit error concealment, a simple alternative can be used to achieve the effect of compensating bit error losses with as little complexity as possible; for bit error diffusion suppression, an error information feedback mechanism is established through the existing channels of H.264, and the frame is implemented according to the feedback. Intra-coding to achieve the effect of diffusi...

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Abstract

The invention is concerned with compressing video transmitting error-code eliminative method based on H.264, in order to eliminate the error-code simply and effectively, it is: combines the error-code cover and the error-code pervasion-control to achieve the error-code elimination by the feedback mechanism of the error-code information; loads the information check error-code occur of the Slice and the statistic of the error-code information such as the losing data location by the serial number of the NALU; establishes the inner error-code information feedback channel of the H.264 system by defining the extending SEI information; achieves the error-code pervasion-control by the sectional time-by-time in-frame coding.

Description

technical field [0001] The invention relates to a method for eliminating bit errors in compressed video transmission, in particular to a method for concealing bit errors in compressed video transmission based on H.264 and a method for suppressing bit error diffusion. Background technique [0002] The International Telecommunication Union Telecommunication Standardization Sector ("ITU-T") in conjunction with the International Organization for Standardization ("ISO") and the International Electrotechnical Commission ("IEC") The H.264 compressed video compression coding standard formulated by the Moving Picture Experts Group (MPEG for short) has gradually become a mainstream standard in multimedia communications. A large number of multimedia real-time communication products adopting the H.264 standard, such as conference TV, videophone, third generation (3rd Generation, referred to as "3G") mobile communication terminals, and network streaming media products have come out succe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/89H04N19/895
CPCH04N19/107H04N19/164H04N19/174H04N19/61H04N19/89
Inventor 罗忠宋彬常义林周宁兆
Owner SNAPTRACK
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