Time-space domain split multiple state video coding method and device
A video coding, multi-state technology, applied in the multimedia field, can solve the problems of poor video effect and single recovery method, and achieve the effect of improving quality and avoiding loss.
Inactive Publication Date: 2012-05-30
湖北鸿云科技股份有限公司
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[0004] In view of this, the present invention is to provide a method and device for multi-state video encoding in time-space domain division, so as to solve the problem of single recovery method and poor video effect in the recovery process of the above-mentioned video code stream
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[0046] In order to clearly illustrate the solutions in the present invention, preferred embodiments are given below and detailed descriptions are given in conjunction with the accompanying drawings.
[0047] see figure 1 , the method of the present invention comprises:
[0048] Step 11: Divide the multimedia code stream into multi-state codes in time domain and space domain;
[0049] The number of subsequences for multi-state encoding mainly depends on the estimation of the error-prone network channel transmission state in the application scenario. Different time domain intervals and division unit sizes can be combined into various types of multi-state coding. For example, a time domain interval of 3 frames and a division unit size of 1 field corresponds to multi-state coding composed of 6 subsequences.
[0050] In this embodiment, the temporal interval is 2 frames and the division unit size is 1 field. The entire video sequence is first divided into odd field subsequences ...
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This invention discloses a method for cutting multi-state video code in time space domains, including cutting a multimedia bit rate into a multi-state codes in the time and space domains; independently coding each sub-list and transmitting through a channel, respectively; independently processing prediction of each error concealing mode to the code transmitted by each channel and embedding the predicted result into the code to transmit; decoding the received code and selecting corresponding executable error concealing mode based on the predicted result, and processing corresponding error concealing to the wrong code, and combining each bit rate after the error concealing in the time domain and the space domain. This invention discloses a device for cutting multi-state video code in time space domains. The method and device of this invention is capable of selecting multiple error concealing modes to the wrong bit rate to process, recovering the wrong bit rate at each channel, avoiding bit rate loss and improving the video flux quality.
Description
technical field [0001] The present invention relates to the field of multimedia technology, in particular to a method and device for time-space domain division multi-state video coding. Background technique [0002] In the process of traditional video coding, the video error-tolerant coding technology used is mostly decoded based on a single prediction state, so the loss of data often leads to the fact that the subsequent correctly received code stream cannot be decoded before the decoding prediction state is reset. A multi-state coding is proposed, which divides the original video sequence into two subsequences: odd frame sequence and even frame sequence. The two subsequences are coded separately and transmitted as two separate code streams through different channels. If both sub-sequences are received correctly, the decoded odd-even frame sequence will be merged into a whole, that is, the receiving end obtains a complete frame sequence. If there is a decoding error in th...
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IPC IPC(8): H04N7/68H04N7/32H04N19/895
Inventor 沈未名郭晓云黄晓平种衍文万守杰杨黎东方广李伟宋绘宏鲁盛
Owner 湖北鸿云科技股份有限公司