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Multiple angle movement target detection, positioning and aligning method

A moving target, multi-view technology, applied in the radio wave measurement system, image data processing, utilization of re-radiation, etc., can solve problems such as high computational complexity, weak ability to deal with occlusion, accurate detection, positioning and corresponding target difficulties, etc. Achieve the effect of meeting real-time requirements, fast computing speed, and strong ability to deal with occlusion

Inactive Publication Date: 2009-07-15
TSINGHUA UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

When there are multiple moving objects, the problem of detecting, localizing and corresponding objects becomes complicated
There are mainly two problems in the following aspects: First, multiple targets interact with each other to generate occlusion, making it very difficult to accurately detect, locate and correspond to targets; second, the computational complexity of multiple viewing angles and multiple targets is high
The method based on the fusion space does not directly extract the target on the two-dimensional image of each viewing angle, but processes the space after information fusion. The fused information takes into account the influence of occlusion between targets, so this kind of method has better ability to deal with occlusion. Strong, often get better processing results, but the disadvantage is that the computational complexity is very high, unable to meet real-time requirements
[0006] In summary, the existing methods have weak ability to deal with occlusion, high computational complexity, and it is difficult to meet the requirements of video surveillance

Method used

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  • Multiple angle movement target detection, positioning and aligning method
  • Multiple angle movement target detection, positioning and aligning method
  • Multiple angle movement target detection, positioning and aligning method

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0031] Such as figure 1 Shown: Multiple cameras (at least two) monitor an area. The projection parameters of all cameras (including the focal length, the angle between the two axes of the image coordinate system, the position of the principal point at the intersection of the image coordinate system, the internal parameters such as the measurement value of the camera coordinate system in the image coordinate system, and the external parameters such as camera translation and rotation) have been calibration.

[0032] The embodiment of the present invention proposes a multi-view moving target detection, positioning and corresponding method based on three-dimensional reconstruction, and the specific steps are as follows:

[0033] Step 101...

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Abstract

The invention discloses a multi-view moving target detection, positioning and corresponding method, which belongs to the technical field of video monitoring. The method includes the following steps: performing foreground detection on video images of multiple viewing angles to obtain a binary foreground image; establishing a space field model according to the binary foreground image, and performing three-dimensional reconstruction in the space field model to obtain a motion The 3D reconstruction result of the target; analyze the 3D reconstruction result, detect and locate the moving target in the space field, and obtain the spatial position of the moving target; project to each viewing angle according to the spatial position of the moving target, and determine multiple viewing angles Correspondence between moving targets. The invention has the characteristics of strong ability to deal with occlusion, fast calculation speed and the like, and can meet the real-time requirements of video surveillance.

Description

technical field [0001] The invention relates to the technical field of video surveillance, in particular to a method for detecting, locating and corresponding a multi-view moving target. Background technique [0002] In recent years, video surveillance has been widely used in urban security, traffic monitoring, production safety and other fields. In video surveillance, the technical problems of multi-camera surveillance have been plagued by the development of the industry. Multi-camera monitoring includes two situations: one is that there is no overlapping area between the camera views, that is, the single-view situation; the other is that there are overlapping areas between the camera views, that is, the multi-view situation. [0003] The detection, positioning and corresponding technology of moving targets in multi-view situations is the key technology in the multi-camera video surveillance system, and is the basis for subsequent advanced processing such as target trackin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C11/36G06T7/00G06T7/20
Inventor 丁晓青徐剑吴佑寿王生进
Owner TSINGHUA UNIV
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