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Network transmission characteristic friendly real-time image adaptive recovery system and method

A real-time image and network transmission technology, applied in image communication, selective content distribution, electrical components, etc., can solve the problem of frequently applying for IDR frames, etc., and achieve the effect of recovering abnormal images and low network bandwidth occupation

Inactive Publication Date: 2018-06-29
XIAMEN YEALINK NETWORK TECH
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Problems solved by technology

[0005] The purpose of the present invention is to provide a real-time image self-adaptive recovery system and method with friendly network transmission characteristics, to solve the problem of frequently applying for IDR frames in a packet loss environment, and to have a certain effect on the image quality of the real-time encoding and decoding system and the network transmission effect promote

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  • Network transmission characteristic friendly real-time image adaptive recovery system and method
  • Network transmission characteristic friendly real-time image adaptive recovery system and method
  • Network transmission characteristic friendly real-time image adaptive recovery system and method

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Embodiment Construction

[0031] Before introducing the detailed scheme of the present invention, the codec principle involved in the present invention is explained:

[0032] Such as figure 1 As shown, the multi-strip coding of AVC (H.264) is taken as an example, but the scope of application is not limited to AVC. It is a schematic diagram of the macroblock dependency relationship between the encoding end and the decoding end. In order to briefly explain related issues, only individual macro blocks in the image block as an example, in practical cases it should be extended to the macroblock dependencies of the entire image.

[0033] The image frames of the encoding end and the decoding end are encoded or decoded in chronological order. The encoding end and the decoding end correspond one-to-one. Taking the frame number as an example, the N-1th frame is encoded or decoded first, the Nth frame is next, and the Nth frame +1 for it again.

[0034] Blocks with the same color between different image frames ...

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Abstract

The invention discloses a network transmission characteristic friendly real-time image adaptive recovery system and method. The system comprises two parts: a coding end and a decoding end. The codingend comprises a coding image index generation module, a coding image macroblock information backup module, a packet loss data propagation area calculation module and a packet loss area coding type control module. The decoding end comprises a decoding image index extraction module, a decoding packet loss information statistics module and a decoding packet loss information feedback module. Accordingto the system and the method, the problem that IDR frames are applied for frequently in a packet loss environment is solved, and the image quality and network transmission effect of a real-time coding / decoding system are improved to a certain degree.

Description

technical field [0001] The invention relates to the technical field of real-time encoded image transmission, in particular to a system and method for adaptive restoration of real-time images with friendly network transmission characteristics. Background technique [0002] In the application of real-time video codec system (such as video conferencing or video surveillance), network packet loss is a problem that must be faced and solved. Taking the multi-strip coding of AVC (H.264) as an example, in AVC (H.264) .264) encoding has a multi-slice (slice) encoding mode, and there is no correlation (or very little correlation) between the slices. In actual network transmission, it is generally transmitted in the form of one slice and one packet. In a packet loss environment, this method can reduce the spread of abnormal images, but it will inevitably cause the phenomenon of "mosaic" (because the actual data has been lost, the image of the lost part can only be recovered by some pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/647H04N21/643
CPCH04N21/643H04N21/64792
Inventor 张联昌毕永建孔令波
Owner XIAMEN YEALINK NETWORK TECH
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