Multi-stage picture division based fast digital video control method

Abstract

The present invention belongs to a method for realizing quick digital video control through a computer in a video monitoring system. The method can realize that a user can rapidly control an image to the assigned position only by clicking once with a mouse, but the traditional method is capable of achieving the goal through control operations for a plurality of times. The main principle is that first, the visual field of each camera is divided according to angles, to form multistage visual field; then each visual field image is displayed on a computer screen, the screen is equally divided into a plurality of parts according to the relation between the displayed visual field and each sub visual field, and each sub visual field and the capture range are marked out, therefore multistage image division corresponding to the multistage visual field is formed, and each image and each stage of visual field are correlated through the preset point of each camera. Through the system realized in the method, the user can realize the quick invoking of the corresponding preset point of the camera system only by clicking once with the mouse, thereby realizing the concept of the quick switching control of the video of ''what you see is what you get''.

Description

technical field [0001] The present invention belongs to a method for realizing fast digital video control by computer in a video surveillance system. Through this method, the image can be quickly controlled to a designated position by the operator with a click of a mouse, while the traditional method requires multiple controls. operation to achieve the purpose. The main principle is: first, divide the field of view of each camera according to the angle to form a multi-level field of view; then display the images of each field of view on the computer screen, and divide the screen into several equal parts according to the relationship between the displayed field of view and each sub-field of view, Each sub-field of view and the capture range are marked, so that a multi-level picture division corresponding to the multi-level field of view is formed, and each picture is associated with each level of field of view through the preset points of each camera. According to the system r...

AI Technical Summary

Problems solved by technology

[0007] A. In the application of the "Traffic Violation Video Management System", the vehicle crosses the yellow line for a short or medium time, but often such violations only last for a few seconds. When the operator adjusts the lens and pan / tilt to the appropriate position, The time for evidence collection has passed, or the pictures or videos obtained for evidence cannot explain the problem, which is very unfavorable for law enforcement and is not conducive to correcting violations

[0008] B. In terms of urban management, especially for occasions with a particularly large flow of people, the situation is complicated. A camera needs to monitor targets in a wide range. Due to the complicated operation of the monitoring field of view (continuous adjustment of the lens and pan / tilt is required), for simultaneous When there are multiple things that need to be paid attention to, often the manager can only select one of them to focus on monitoring, and can only temporarily let go of the others

In this way, it often leads to some violations and illegal phenomena that cannot be supervised through the monitoring system.

[0009] On the other hand, due to the complicated operation and high requirements for personnel, many cameras are usually in a state of no one to intervene, and only record the set position through the video recorder

After an emergency happened, most management departments had no choice but to investigate and collect evidence through post-event video recording. However, it is precisely because the field of view of the system video recording is preset that in many cases the subject of the event during the video recording is very small. , The location of the recording is very biased, and sometimes it is not in the field of view of the recording at all, and the recording cannot be checked

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