Network interactive high-definition character overlay system

Abstract

The invention discloses a network interaction high-definition character superimposition system. The network interaction high-definition character superimposition system comprises a network control module, a character image signal generating module and a character image signal superimposition module, wherein the network control module is used for providing an operation interface for the user, collecting the user control information and sending the information to the character image signal generating module; the character image signal generating module reads a corresponding character die for character analysis and filling processing according to character setting information, and generating a frame character image after integrating characters one by one and sending the frame character image to the character signal superimposition module; the character signal superimposition module analyzes the signal format of an inputted video signal, sends the format to the character image signal generating module, caches the video signal into memory particles, and superimposes the character images onto the video signal for outputting. The network interaction high-definition character superimposition system adopts network control and can flexibly perform character superimposition processing, so the fault occurrence probability is reduced, massive hardware investment is avoided, space is saved for a work environment and the cost is reduced.

Description

technical field [0001] The invention relates to the field of video and audio broadcast control, in particular to a network interactive high-definition character overlay system. Background technique [0002] The character superimposer is referred to as VDM, which is the abbreviation of English Video Display Metafile. Such as electronic processing devices on monitors, hard disk recorders, etc.), are widely used in traffic monitoring, elevator building monitoring, toll system monitoring and other occasions. [0003] In the field of security monitoring, high-definition video in 3G / HD-SDI signal format is more and more widely used, and most application environments need to superimpose characters on the SDI camera signal to indicate the current camera position, time and other information. At present, the character overlay equipment carried in most SDI cameras in China cannot flexibly overlay characters on videos with different resolutions, and can only generate ASCII English char...

AI Technical Summary

Problems solved by technology

At present, the character superimposition devices carried in most SDI cameras in China cannot flexibly superimpose characters on videos with different resolutions, and can only generate ASCII code English characters, and generally cannot superimpose Chinese characters, which causes great inconvenience to users.

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