Method and system for detecting failure of spliced screen

Abstract

The invention discloses a method and a system for detecting the failure of a spliced screen. The method comprises the steps of extracting a frame of target image at the interval of N frames of image in surveillance video data; processing the image data in all the areas of the spliced screen in the target image in the following way: counting the number of edge points in the areas of the spliced screen, and recording that the area of the spliced screen corresponding to the failure identification of the target image is effective when the ratio of the number of the edge points to the total number of pixel points in the image data in the areas of the spliced screen is judged to be lower than the preset pixel point ratio threshold value, wherein counting comprises T target image with the effective corresponding failure identification content in the areas of the spliced screen in the continuous R target image within the target image; sending out an alarm signal when the ratio of T to R is larger than alarm ratio threshold. The scheme is less in computational burden and effective, and is capable of effectively lowering the labor cost, rapidly and accurately detecting the blank screen failure of the spliced screen, and effectively avoiding misjudgment and misinformation when the video played by the spliced screen has a simple background.

Description

Technical field [0001] The present invention relates to the technical field of digital image processing, in particular to a method and system for detecting splicing screen faults. Background technique [0002] With the development of image display technology and the progress of industrial technology, splicing screens have been increasingly used in public places such as shopping malls. The splicing screen is a complete splicing display unit, which can be used as a monitor alone or spliced ​​into a super large screen. During the use of a super-large screen spliced ​​by multiple splicing screens, if one of the splicing screens fails, it will directly affect the overall display effect. In the prior art, manual monitoring is mostly adopted, but this method is undoubtedly a time-consuming and labor-intensive method. Summary of the invention [0003] In view of the above problems, the purpose of the present invention is to provide a splicing screen fault detection method and system tha...

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Problems solved by technology

[0003] In view of the above problems, the purpose of the present invention is to provide a splicing screen fault detection method and system that solves the above problems, and solve the technical problem that there is no real-time detection of splicing screen faults through electronic devices in the prior art

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