Method and device for determining three-dimensional coverage space of monitoring video and storage medium

A technology covering space and monitoring video, which is applied in closed-circuit television systems, image analysis, image enhancement, etc., and can solve problems such as the inability to accurately determine the three-dimensional coverage space of camera monitoring video

Active Publication Date: 2020-10-30
ZHEJIANG DAHUA TECH CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0006] Embodiments of the present invention provide a method, device, and storage medium for determining a three-dimensional coverage space of a surveillance video, to at least solve the problem in the related art that the three-dimensional coverage space of a camera surveillance video cannot be accurately determined

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  • Method and device for determining three-dimensional coverage space of monitoring video and storage medium
  • Method and device for determining three-dimensional coverage space of monitoring video and storage medium

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Embodiment Construction

[0026] In related technologies, it is often only possible to roughly determine the monitoring coverage area based on the video texture of the monitoring video, and it is impossible to accurately determine and intuitively and three-dimensionally display the three-dimensional coverage space of the camera monitoring video. In addition, when there are overlapping areas in the coverage space of multiple cameras, it is often impossible to accurately determine which camera the monitoring area belongs to.

[0027] In order to overcome the above problems, the embodiment of the present invention can accurately determine the three-dimensional coverage space, and in some exemplary embodiments, it can further intuitively and three-dimensionally display the coverage space of the surveillance video of the real scene in the three-dimensional virtual surveillance scene, so that the user can Clearly and intuitively identify the coverage of camera surveillance video in real scenes.

[0028] Embo...

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Abstract

The embodiment of the invention provides a method and a device for determining a three-dimensional coverage space of a monitoring video, and a storage medium. The method comprises the steps of: obtaining virtual camera parameters of a calibrated virtual camera in a three-dimensional scene, and obtaining the resolution of a video stream of an entity camera corresponding to the virtual camera; determining coordinates of a plurality of vertexes of a video picture of the entity camera under a camera coordinate system according to the virtual camera parameters and the resolution, and converting thecoordinates of the plurality of vertexes under the camera coordinate system into coordinates of the plurality of vertexes under a world coordinate system; and determining the coverage space of the virtual camera in the three-dimensional scene according to the virtual camera parameters and the coordinates of the plurality of vertexes in the world coordinate system. According to the invention, theproblem that the three-dimensional coverage space of the camera monitoring video cannot be accurately determined is solved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of three-dimensional monitoring, and in particular, relate to a method, device and storage medium for determining a three-dimensional coverage space of a monitoring video. Background technique [0002] At this stage, video surveillance has been applied in the streets and alleys, which has played a great role in promoting social security. A clear grasp of the coverage space of video surveillance will be beneficial to the arrangement of cameras in the entire surveillance scene, so as to maximize the utilization of surveillance resources and the maximum coverage of the scene. [0003] At present, the field of video surveillance is mainly based on two-dimensional video, and the coverage space of the camera is approximately judged mainly by identifying the specific content of the video screen. Since the two-dimensional surveillance video is flat, it is difficult to display the three-dimensi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/18G06T7/80
CPCH04N7/18G06T7/80G06T2207/10016
Inventor 吴春阳李乾坤卢维殷俊
Owner ZHEJIANG DAHUA TECH CO LTD
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