Method for sorting three-dimensional wavelet sub-band and enveloping code flow of telescopic video coding

Abstract

The invention discloses a three-dimensional wavelet sub-band sorting and code stream packet sealing method in the telescopic video code, wherein the wavelet sub-band in the time domain is sorted according to the requirement of the sequential decode, and the wavelet sub-band in the time domain is divided into different levels; the wavelet sub-band in the time domain of the same level is sorted according to the size of the transmission distortion MES value; then the code stream after being sorted is packed, then transmitted to a receiving end, when the receiving end does not reach the time limit of the decode, then performs the retransmission when finding the package missing, with the retransmitting time smaller than or equal to the largest retransmitting time; when the receiving end reaches the time limit of the decode, the package missing is not retransmitted. The method provides an effective code rate transmission control method, thereby providing correct code stream distribution for the video code and the transmission, providing the code stream organizing and transmitting way of high performance three-dimensional retractability self-adapting to the isomery, the network bandwidth wave property and the time delay change and the terminal diversity of the user receiving.

Description

technical field [0001] The invention belongs to the field of multimedia communication, in particular to a method for sorting three-dimensional wavelet subbands and encapsulating code streams. Background technique [0002] With the rapid development of Internet technology, multimedia applications including images, videos, sounds and other contents are becoming popular and popular. However, due to the inherent heterogeneity of the Internet, various networks have different channel characteristics (such as: different channel bandwidths, delays, jitters, etc.). At the same time, there are various types of terminal devices used by users, and the display capabilities and processing capabilities of these terminals are obviously different. Therefore, the video quality obtained by users through different terminals on different networks is not the same, and scalable coding needs to be used to solve this problem. The code stream obtained by encoding the video in a scalable encoding ma...

AI Technical Summary

Problems solved by technology

However, most of the current code stream organization methods only support the embedded code stream within the frame, but do not consider the embedded organization of the code stream between frames, and do not consider the importance of each sub-band to the quality of the reconstructed video frame after wavelet transform. Consider the impact of delay during transmission, etc.

Therefore, when organizing and transmitting the entire video code stream, it is impossible to guarantee the global optimal allocation of the entire video code stream under the condition of network constraints

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