False proof detection method for real time monitoring videosignal

Abstract

The invention discloses an anti-fake detection method for real-time video signal monitoring, which is characterized in that: a cipherkey is provided, time synchronization is performed between the detecting end and the transmitting end, one image is selected from the preset image library to create anti-fake logo according to time signals, one factor of the brightness, size, angle and color of eachpoint or random combination of the factors are adjusted by the cipherkey, and overlay position of the logo is computed; image having same shape and size with the logo is extracted from the received video signal according to the computed position, matching detection is performed to the two images, true-false of the video signal is judged by using statistical method according to the matching degree.The anti-fake detection method for real-time video signal monitoring of the invention can detecting invasion of video motoring network, replacement, time-delay or local modification of the video signal, which serves an anti-fake function; processing work amount is small, implementation cost is low.

Description

[0001] This application is a divisional application, the original application date is February 6, 2005, the application number is 200510038321.1, and the title of the invention is a logo anti-counterfeiting method for real-time video monitoring. technical field [0002] The invention relates to video signal processing, in particular to a method for proving the reliability of real-time video and realizing real-time video anti-counterfeiting, especially an anti-counterfeiting detection method for detecting the video signal. Background technique [0003] With the popularity of video surveillance, how to verify the reliability of real-time video signals and implement anti-counterfeiting on video networks has become a problem that people pay attention to. [0004] In the security of residential areas and some important places, cameras and cables are usually used to form a video monitoring network. For this, someone will insert a pre-prepared video signal into the video network by ...

AI Technical Summary

Problems solved by technology

However, the limitation of this scheme for real-time anti-counterfeiting is that the anti-counterfeiting effect of this scheme cannot be achieved for complex environments where the distortion is difficult to accurately control using analog signal transmission or analog-to-digital mixing, or that needs to undergo multiple analog-to-digital, digital-to-analog conversions, etc. promise

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