A video encoding method for multiple description screen content

Abstract

The invention discloses a multi-description screen content video coding method. The multi-description screen content video coding method comprises the following steps of: (1), dividing a screen content video into two sub-sequences having an odd number of frames and an even number of frames; (2), respectively coding the two sub-sequences to generate two corresponding descriptions, which are independently transmitted in a network, wherein a specific process of coding the sub-sequences is as follows: before the single sub-sequence is coded, a part of image blocks of the other sub-sequence is selectively added at first; the single sub-sequence and redundant information are combined; and palette coding and arithmetic coding are sequentially carried out, so that the corresponding descriptions are generated; and (3), at a receiving end, respectively decoding according to different conditions that the single description is received or the two descriptions are simultaneously received. By means of the multi-description screen content video coding method disclosed by the invention, the screen content video is coded through a multi-description technology; therefore, in the case of loss, a part of descriptions still can be re-established; retransmission of a lost data packet is not required; a robust video transmission scheme is provided; therefore, real-time communication requirements can be satisfied; and furthermore, the network congestion can be lightened.

Description

technical field [0001] The invention relates to a screen content video encoding method, in particular to a multi-description screen content video encoding method, and belongs to the technical field of screen content video communication. Background technique [0002] In wireless screen display, mirroring screen, cloud desktop, and screen / desktop virtualization applications, screen sharing usually requires real-time, low-latency transmission between devices in the form of screen content video. Compared with camera-captured videos, screen content videos usually contain a large number of static or active computer-generated graphics and text, and may contain large movements (such as scrolling down the page), movements that are different from the natural world (such as objects in presentation documents, etc.) gradual fade-in, fade-out), discontinuous hues, saturated colors, limited color variety, no sensor noise, large uniform smooth areas, recurring patterns, etc. Screen content...

AI Technical Summary

Problems solved by technology

Users with relatively scarce resources hope to obtain smooth screen content transmission with acceptable quality, while users with rich resources hope to obtain a higher-quality screen content video transmission experience. Existing screen content coding schemes cannot easily provide scalable screens Content video code stream

Images