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Panoramic monitoring system

A panoramic monitoring and panoramic technology, applied in the field of panoramic monitoring system, can solve the problems of high equipment and manpower requirements, discount of image authenticity, complex image acquisition data, etc., to achieve the effect of improved experience

Active Publication Date: 2019-02-15
成都易瞳科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shortcomings of this method are: firstly, the image acquisition data is relatively complex, and the equipment and manpower requirements are relatively high; in addition, the image data is relatively static data, and there is a certain time interval from image acquisition to image online; and the cost of image acquisition frequency is also will have an impact, and the authenticity of the image will be greatly reduced
[0004] This solution proposes a panoramic camera group to solve the real-time browsing and monitoring needs of large scenes, using multiple panoramic camera images to generate a global panoramic monitoring image to solve the problem of rapid positioning of the monitoring scene, and using multiple associated panoramic cameras The mutual switching scheme perfectly solves the user experience problem of real-time browsing of scenes without dead ends in large scenes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] When all cameras in the monitoring system use 720-degree panoramic cameras, the corresponding position processing in S102 is as follows:

[0048] When performing projection transformation, the relative position and height of the camera installation need to be fully considered during the correction process of adjacent images, and the distortion consistency of the projection image should be ensured as much as possible during the projection process, so as to prevent the problem of real-time overall deformation of the projection image splicing caused by excessive distortion of the edge image . Here the installation height is as shown in the figure ( Figure 7 ), the maximum range of fov and plane projection is limited to:

[0049]

[0050]

[0051] Among them, fov represents the viewing angle range of the selected panoramic image; H represents the installation height of the panoramic camera; W represents the horizontal distance of the adjacent panoramic camera instal...

Embodiment 2

[0053] All cameras in the monitoring system use fisheye cameras to look down on the monitoring, and the following processing is performed in S102:

[0054] 1. Fisheye lens calibration: use the checkerboard pattern to calibrate the camera, and use the Zhang Zhengyou calibration method to calibrate the internal parameters of the lens;

[0055] 2. Fisheye image distortion processing is as follows:

[0056]

[0057] where r src Indicates the radius of the pixel ring centered on the center of the image circle in the original picture, r dest Indicates the radius of the pixel ring with the center of the image circle as the center in the conversion target picture, a, b, c, and d are correction coefficients, and the values ​​are determined by the camera calibration method;

[0058] Carry out following processing in S103:

[0059] 3. Intercept the actual effective distortion area image;

[0060] 4. Splicing the captured images;

Embodiment 3

[0062] Under the condition that all cameras in the surveillance system use a combination of fisheye cameras and 720-degree panoramic cameras, the process in S102 is:

[0063] 1. Perform equidistant cylindrical projection transformation on the fisheye image, and the equidistant cylindrical projection transformation formula is:

[0064]

[0065]

[0066]

[0067]

[0068] Among them, cols and rows represent the width and height of the image; is the equivalent projection dimension, λ is the equivalent projection longitude; f is the equivalent projection radius, determined by the camera lens calibration method; x src 、y src is the original image coordinate value.

[0069] 2. Intercept the overlooking area of ​​the fisheye image after equiangular transformation;

[0070] 3. Carry out calibration operation with embodiment one;

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Abstract

The invention discloses a panoramic monitoring system. Some areas are selected from images of multiple panoramic cameras for spliced imaging, so as to form a large-scene global panoramic monitor graph, so that large-scene unified images are monitored in real time; a corresponding area is selected from the panoramic monitor image, so as to rapidly enter a specific corresponding camera to check panoramic image in a corresponding position; further, cameras show neighboring associated cameras mutually, so that vision fields of associated cameras can be transited and switched, and a 3D roaming effect in a real-time scene is realized. The system enables a user to browse a large scene without dead zones.

Description

technical field [0001] The present invention is a method for switching between unified scenes and real-time scenes of different panoramic pictures in real time, and relates to the determination of relative position information in the panoramic scenes and the dynamic display effect during scene switching. Background technique [0002] In the monitoring industry, for scenes with relatively large and relatively complex environments, camera groups are generally used for monitoring. For ordinary camera monitoring, the monitoring personnel are generally faced with the situation that the images of multiple cameras are irrelevant and there are many monitoring windows, which makes it easy for people to miss key monitoring scenes. In addition, in the actual monitoring scene, the layout of the camera often needs to consider the orientation of the monitoring camera and the specific requirements of the network and power supply for the camera layout. In short, for ordinary cameras, the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232H04N5/247H04N5/262H04N7/18H04N9/31H04N23/90
CPCH04N5/2624H04N7/181H04N9/3179H04N23/698H04N23/90
Inventor 张恩泽赖文杰胡志发成茵
Owner 成都易瞳科技有限公司
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