Video signal monitoring method and video signal monitoring system

Abstract

The invention provides a video signal monitoring method and a video signal monitoring system. The video signal monitoring method comprises the steps of respectively selecting a source video image and a target video image corresponding to each timestamp from a source video signal and a target video signal according to a plurality of appointed timestamps; respectively extracting source feature information and target feature information from the source video image and the target video image corresponding to each timestamp, and computing a reference feature difference value corresponding to each timestamp; according to the reference feature difference value of any timestamp, the reference feature difference value of previous n1 frames of any timestamp and the reference feature difference value of latter n2 frames of any timestamp, determining a target feature difference value corresponding to the any timestamp; comparing the target feature difference value corresponding to the any timestamp with a predetermined threshold to determine whether the target video image corresponding to the any timestamp is abnormal, and counting the quantity of the abnormal target video images; and giving an alarm for prompting when determining that the target video signal is abnormal according to the quantity of the abnormal target video images.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to a video signal monitoring method and a video signal monitoring system. Background technique [0002] In the field of traditional radio and television, in order to ensure the safe, reliable and high-quality operation of the cable digital TV system, it is necessary to deploy a multi-level monitoring and monitoring system to monitor the quality and content of the signals at the front end of the broadcast digital TV programs. Management, to achieve monitoring data scheduling, monitoring screen scheduling, equipment management and broadcast program content management, thereby improving the efficiency of cable digital TV network operation and maintenance, saving network operation and maintenance costs and human resources. [0003] Content security monitoring, as a means of monitoring the security of TV program broadcasting, is a major issue related to national cultural securi...

AI Technical Summary

Problems solved by technology

TV programs transmitted on the telecommunication network and the Internet are also faced with broadcast security issues. Even compared with traditional broadcast TV networks, the situation of TV programs in new media services is more complicated: first, image quality, coding standards, Diversity in encapsulation formats, etc.; secondly, the diversity of transmission channels; and thirdly, the diversity of receiving terminals, which makes the technical requirements for content security monitoring higher.

[0004] During the entire transmission process of multimedia information (video and audio signals), some video and audio content is changed (that is, the signal is abnormal), but the transmission process itself can operate normally. From the perspective of the broadcaster, there is a broadcast fault, and the severity of the fault depends on the tampered content; from the user's point of view, the user experience will be reduced to varying degrees

In the related technology, most of the broadcasting channel classification control system of the TV station adopts the original end and signal manual monitoring method, through the real-time observation of human eyes to find faults and carry out alarm processing, but the manual detection method cannot guarantee the reliability of the detection results and monitoring efficiency

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