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Video monitoring coverage rate calculation method and device, and video monitoring layout method and system

A technology of video surveillance and calculation method, applied in CCTV systems, computing, television and other directions, can solve the problems of inaccurate video surveillance coverage, inability to accurately reflect the real surveillance situation in the surveillance area, and inability to guide camera placement, etc.

Active Publication Date: 2016-10-12
ZHEJIANG UNIVIEW TECH CO LTD
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Problems solved by technology

[0004] The purpose of the present invention is to provide a video monitoring coverage calculation method and device, point layout method and system, to solve the problem that the video monitoring coverage estimated in the prior art is not accurate enough to accurately reflect the real monitoring situation of the entire monitoring area , and the problem of not being able to guide the placement of cameras in the monitoring area through the calculation of video surveillance coverage

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  • Video monitoring coverage rate calculation method and device, and video monitoring layout method and system
  • Video monitoring coverage rate calculation method and device, and video monitoring layout method and system
  • Video monitoring coverage rate calculation method and device, and video monitoring layout method and system

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Embodiment Construction

[0072] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments, and the following embodiments do not constitute a limitation of the present invention.

[0073] In this embodiment, a method for calculating the coverage rate of video surveillance, such as figure 1 shown, including:

[0074] Step S1. Calculate the monitoring coverage area of ​​each virtual camera according to the distribution of the virtual cameras in the virtual three-dimensional model corresponding to the monitoring area.

[0075] This embodiment utilizes 3D scene reconstruction technology to establish a virtual 3D model of the entire real monitoring area to simulate the monitoring area, and arranges virtual cameras at selected points in the virtual 3D model to accurately calculate the monitoring coverage of each virtual camera in real time. area, the cross coverage area between multiple virtual cameras, and the mon...

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Abstract

The invention discloses a video monitoring coverage rate calculation method and device, and a video monitoring layout method and system. A virtual three-dimensional model of a whole monitoring area is established through three-dimensional modeling; layout of virtual cameras is carried out in the three-dimensional model; a monitoring coverage area of each virtual camera, a monitoring coverage total area of all virtual cameras and a total area of the whole monitoring area are calculated accurately; and therefore, a video monitoring coverage rate of the whole monitoring area is calculated accurately. A virtual camera layout scheme can be adjusted according to the monitoring overage rate demand of a user. The layout of the virtual cameras in the whole monitoring area can be further optimized; and the video monitoring coverage rate of the whole monitoring area can be improved. Finally, the layout information of all virtual cameras can be output and is used for instructing layout construction of onsite real cameras. The layout accuracy of the onsite real cameras and the onsite construction efficiency can be improved.

Description

technical field [0001] The invention belongs to the technical field of video monitoring, and in particular relates to a method and device for calculating the coverage rate of video monitoring, and a point layout method and system. Background technique [0002] Video surveillance coverage refers to the ratio of the effective coverage area of ​​video surveillance to the total area of ​​the entire surveillance area. It is an important indicator to evaluate whether the camera layout in the video surveillance system is scientific, and it is also an important indicator to judge whether the entire surveillance area is effectively controlled. [0003] In the prior art, the calculation of video surveillance coverage is generally done after all the cameras in the surveillance system are deployed, and then the video surveillance coverage is estimated by estimating the area of ​​the entire surveillance area and combining the camera layout information on the CAD drawing. The video survei...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/18G06F17/50
CPCG06F30/18G06F30/20H04N7/181
Inventor 单远达
Owner ZHEJIANG UNIVIEW TECH CO LTD
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