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Map positioning method and system applied to indoor video monitoring system

A video surveillance system and video surveillance technology, applied in image analysis, image data processing, instruments, etc., can solve problems such as time-consuming and complicated processes

Active Publication Date: 2021-04-16
INFORMATION SCI RES INST OF CETC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually this measurement process is done manually, which is complex and time-consuming in multi-camera video surveillance systems
If the user adjusts the shooting angle of the camera during the subsequent use of the video surveillance system, this complicated process needs to be repeated

Method used

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  • Map positioning method and system applied to indoor video monitoring system
  • Map positioning method and system applied to indoor video monitoring system
  • Map positioning method and system applied to indoor video monitoring system

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Embodiment Construction

[0046] In order to enable those skilled in the art to better understand the technical solution of the present disclosure, the present disclosure will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0047] First, refer to figure 1 An example electronic device for implementing a map positioning method and system applied to an indoor video surveillance system according to an embodiment of the present disclosure will be described.

[0048] Such as figure 1 As shown, the electronic device 200 includes one or more processors 210, one or more storage devices 220, one or more input devices 230, one or more output devices 240, etc., these components are connected via a bus system 250 and / or other The form of the connecting mechanism interconnects. It should be noted that figure 1 The shown components and structure of the electronic device are exemplary rather than limiting, and the electronic device may also have other c...

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Abstract

The invention provides a map positioning method and system applied to an indoor video monitoring system, and the method comprises the steps: building an indoor three-dimensional map through a visual SLAM technology, and building a corresponding relation between the built indoor three-dimensional map and an indoor plane structure diagram; calculating the position and posture of a video monitoring camera by using a repositioning principle in a visual SLAM technology, thereby calculating a homography matrix from a video monitoring picture to a plane structure diagram; and converting the identified and extracted target in the video monitoring picture into a plane structure chart through the spatial transformation of the homography matrix, thereby realizing the display and marking of the target in the plane structure chart. According to the invention, the position relationship between the video monitoring image and the plane structure diagram can be automatically calculated without manual measurement, so that the target in the video monitoring image is marked at the corresponding position in the plane structure diagram. Even if the angle of the video monitoring camera is adjusted in the subsequent using process, the map positioning function can still be automatically achieved.

Description

technical field [0001] The disclosure belongs to the technical field of video monitoring, and in particular relates to a map positioning method and system applied to an indoor video monitoring system. Background technique [0002] The indoor video surveillance system with positioning function can display or mark the specific targets appearing in the video surveillance in the indoor plan structure diagram. In order to mark the target in the video surveillance image in the planar structure diagram, it is necessary to establish the corresponding relationship between the video surveillance image and the planar structure diagram. By setting some mapping points in space, collect the pixel coordinates of the mapping points in the video surveillance image, correspondingly, measure the position of the mapping point in the actual scene, and then correspond to the position in the planar structure diagram, through these mapping The point data calculates the corresponding relationship b...

Claims

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Application Information

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IPC IPC(8): G06T7/80G06T7/70G06T17/05
Inventor 孟繁乐查文中王蓉辛紫华
Owner INFORMATION SCI RES INST OF CETC
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