Shunting coding method for digital video monitoring system and video monitoring system

Abstract

The embodiment of the invention discloses a shunting coding method for a digital video monitoring system. The method comprises the following steps: decomposing a video into primary video frames and secondary video frames by using two-dimensional wavelet transform; coding the primary video frames to generate a primary code stream and primary video reconstruction frames; and based on the primary video reconstruction frames, coding the secondary video frames to generate a secondary code stream. Corresponding, the embodiment of the invention also discloses a video monitoring system. The video monitoring system comprises a shunting module, a primary code stream coding module and a secondary code stream coding module, wherein the shunting module is used for decomposing the video into the primary video frames and the secondary video frames by using two-dimensional wavelet transform; the primary code stream coding module is used for coding the primary video frames to generate the primary code stream and the primary video reconstruction frames; and the secondary code stream coding module is used for coding the secondary video frames to generate the secondary code stream based on the primary video reconstruction frames. By implementing the invention, the digital video monitoring system can satisfy monitoring requirements for videos with different resolutions and enhance the video compression coding efficiency.

Description

Technical field [0001] The invention belongs to the field of information technology, and specifically relates to a digital video monitoring system shunt coding method and a video monitoring system. Background technique [0002] As an important security monitoring and assurance tool, video surveillance has been widely used in various industries. With the rapid development of wireless mobile network technology and mobile communication equipment technology, the demand for mobile video surveillance is increasing. [0003] Among mobile terminal devices, mobile phones dominate the mainstream due to their convenience and dexterity. While mobile phones are used in digital video surveillance, the size of the displayed video images is generally of lower resolution. In this way, the server-side digital video surveillance system must not only meet the requirements of high-resolution video surveillance, but also produce low-resolution video images that meet the needs of mobile phone surveillan...

AI Technical Summary

Problems solved by technology

In this way, the digital video surveillance system on the server side must not only meet the requirements of high-resolution video surveillance, but also produce low-resolution video images that meet the requirements of mobile phone surveillance. However, the existing video surveillance frame code stream cannot meet both requirements. Terminals with different resolution requirements

[0004] In addition, although the current network technology has been greatly developed, the speed and stability of network transmission are still restricted by various technical and environmental factors. The existing video surveillance system cannot match the existing network video frame mode well.

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