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Video compression fault-tolerant transmission method and system based on network
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A technology of video compression and transmission method, which is applied in the field of multimedia communication and can solve problems such as error expansion and data error.
Active Publication Date: 2013-04-03
BEIJING JETSEN TECH
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[0006] The technical problem to be solved by the present invention is to provide a network-based video compression error-tolerant transmission method and system to solve the problem that if an image error occurs in a video sequence, all subsequent data will be error-prone, and the error will continue to expand
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Embodiment 1
[0053] Such as figure 1 As shown, this embodiment records a network-based video compression fault-tolerant transmission method, comprising the following steps:
[0054] S1: Down-sampling the collected video data, and analyzing the coding information of the down-sampled data;
[0055] Such as figure 2 As shown, the step S1 specifically includes the following steps:
[0056] S11: For the downsampled data f n Make k*k grid division respectively, define is the sub-image after segmentation, where n represents the nth frame image, k represents the segmentation size, k is 1, 2, 4, 8, i represents the grid row coordinates, and j represents the grid column coordinates;
[0057] S12: For the sub-image Extract haar features, define express The feature vector of the corresponding sub-block, the total length of the image feature vector of each frame (2×2+4×4+8×8)×8=672;
[0058] S13: If n=1, save Go to step S11; if n>1, go to step S14;
[0059] S14: Calculate the similarity...
Embodiment 2
[0081] A network-based video compression fault-tolerant transmission system for implementing the method described in Embodiment 1, comprising:
[0082] The sampling analysis module is used to down-sample the collected video data, and analyze the encoding information of the down-sampled data;
[0083] An encoding module, including an encoding end, configured to encode data according to the analysis result of the encoding information, and adjust the encoding method according to the received decoding information;
[0084] A connection establishment module, configured to establish a data transmission connection channel between the encoding end and the decoding end;
[0085] The decoding and feedback module includes a decoding end that decodes the data transmitted from the encoding end, and is used to generate decoding information according to the error of the decoded data and feed it back to the encoding end through the data transmission connection channel.
[0086] In the encodi...
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Abstract
The invention discloses a video compression fault-tolerant transmission method and system based on a network. The video compression fault-tolerant transmission method based on network comprises the following steps of: s1: down-sampling collected video data, and carrying out code message analysis on the down-sampled data; s2: encoding the data according to a code message analysis result; S3: establishing a data transmission connection channel between an encoding side and a decoding side; s4: transmitting encoded data to the decoding side by the encoding side, decoding the data by the decoding side, generating the decoding information according to a result of judging whether the decoded data is accurate or inaccurate, and feeding the decoding information back to the decoding side through the data transmission connection channel; ands5: adjusting an encoding manner by the encoding side through the received decoding information. The video compression fault-tolerant transmission system comprises a sampling analysis module, an encoding module, a connection establishing module and a decoding and feedback module. By utilizing the method provided by the invention, the problem that the following data is wrong if one image in a video sequence is wrong, and the error is continuously expanded can be solved.
Description
technical field [0001] The invention relates to the technical field of network-based multimedia communication, in particular to a network-based video compression error-tolerant transmission method and system. Background technique [0002] With the gradual establishment of the third-generation digital wirelessmobile communication network and the subsequent three-generation mobile communication systems, the transmission of multimedia data services based on video information on wireless networks has developed rapidly. People are eager to develop and use multimedia on wireless channels. The reason is that Huge market potential and convenient operation. However, due to the limited bandwidth resources of the wireless channel, and the unstable channel conditions cause high bit errors and network congestion, it has a serious impact on the quality of the reconstructed video. [0003] At present, the bandwidth of wireless mobile communication networks not only needs to process voice...
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