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Distributed Video Coding Side Information Generation Method

A technology of distributed video and side information, applied in the direction of digital video signal modification, image communication, electrical components, etc., can solve the problems of lack of globality and lack of frame information at the encoding end, so as to improve reconstruction quality and improve quality. Effect

Active Publication Date: 2017-12-12
TIANJIN UNIV
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Problems solved by technology

The usual side information is generated by the key frame through a certain algorithm at the decoding end, and does not have frame information at the encoding end, so it is not global

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  • Distributed Video Coding Side Information Generation Method
  • Distributed Video Coding Side Information Generation Method
  • Distributed Video Coding Side Information Generation Method

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Embodiment Construction

[0011] The proposed side information generation method for distributed video coding includes two kinds of side information, which are then fused to obtain the fused side information, and then reconstructed to decode non-key frames. There are two kinds of side information, namely global side information and local side information. The global side information is at the encoding end. According to the two key frames before and after, they are matched with the feature points of the current frame through the SURF algorithm, and the matching parameters are passed to the decoding end, and decoded together with the decoded key frame to obtain the global side information. The local side information is the side information obtained by motion compensation interpolation from the decoded key frames at the decoding end.

[0012] In the method for generating global side information proposed by the present invention, firstly, at the encoding end, the front and rear key frames are used as the f...

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Abstract

The invention belongs to the technical field of distributed video coding, and is a novel method for generating side information of distributed video coding. For this reason, the technical solution adopted by the present invention is that the distributed video coding side information generation method includes the following steps: the global side information generation step is, at first, using the front and rear key frames as the front and rear reference frames at the coding end , and perform SURF algorithm feature point extraction with the current non-key frame, calculate the main direction of the feature point, thereby generating a feature description vector, and then perform matching according to the nearest neighbor vector matching method, and then pass the global parameters to the decoder through the channel, The decoder transforms the received global parameters with the decoded front and back reference frames to obtain the side information of the two current non-key frames, and finally averages the two side information to obtain the global side information. The present invention is mainly applied to distributed video coding.

Description

technical field [0001] The invention belongs to the technical field of distributed video coding, and in particular relates to a novel method for generating side information of distributed video coding. technical background [0002] Distributed video coding is an emerging video coding technology, which can transfer motion estimation and motion compensation prediction from the encoding end to the decoding end, effectively reducing the complexity of the encoding end, and is suitable for low-complexity, low-power video systems, such as wireless surveillance systems, wireless video systems, etc. [0003] The decoding end of distributed video coding relies on check information to assist side information to decode non-key frames, and the quality of side information is crucial for reconstructing non-key frames. The usual side information is generated by the key frame through a certain algorithm at the decoding end, and does not have frame information at the encoding end, so it is n...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/51H04N19/55
Inventor 郭继昌许颖
Owner TIANJIN UNIV
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