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Method and system for target recognition by laser composite imaging

A composite imaging and target recognition technology, applied in the field of target recognition, can solve the problems of complex stitching algorithm, susceptibility to electromagnetic interference, spatial resolution and distance resolution (poor image quality, etc.)

Active Publication Date: 2019-04-05
11TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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Problems solved by technology

[0002] At present, there are mainly three technical solutions for target recognition. The first one is to use radar for target recognition. The spatial resolution and distance resolution (image quality ) is poor and susceptible to electromagnetic interference; the second is to use infrared imaging for target recognition. This scheme can only recognize the two-dimensional image of the target but cannot obtain the distance information of the target, and the performance of the infrared imaging device will be affected by the temperature characteristics of the target. Influence; the third is the scheme using slice distance gating, the splicing algorithm of this scheme is complex and difficult to achieve real-time processing

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  • Method and system for target recognition by laser composite imaging

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Embodiment 1

[0064] Such as figure 1 , 2 As shown in and 5, an embodiment of the present invention provides a method for target recognition using laser composite imaging, including:

[0065] S101, acquiring range images, intensity images, azimuth angles and elevation angles of each point of the target through laser composite imaging;

[0066] S102, performing three-dimensional point cloud data reconstruction on the range image, intensity image, azimuth angle, and elevation angle to obtain three-dimensional point cloud data, where the three-dimensional point cloud data includes the amplitude, height, shape, spectrum, and scattering information of the target;

[0067] S103. Perform filtering processing on the 3D point cloud data, specifically including:

[0068] S104, estimate the size, shape, height, distance, scattering and physical characteristic parameters of the surface layer of the target through mathematical multi-dimensional space transformation, and finally according to the discri...

Embodiment 2

[0111] Such as image 3 with 4 As shown, an embodiment of the present invention provides a system for target recognition using laser composite imaging, including:

[0112] The acquisition module is used to acquire the distance image, intensity image, azimuth angle and elevation angle of each point of the target through laser composite imaging;

[0113] The reconstruction module performs three-dimensional point cloud data reconstruction on the range image, intensity image, azimuth angle and pitch angle to obtain three-dimensional point cloud data, and the three-dimensional point cloud data includes the amplitude, height, shape, spectrum and scattering information of the target;

[0114] The filtering processing module is used to perform filtering processing on the three-dimensional point cloud data;

[0115] The identification module estimates the size, shape, height, distance, scattering and physical characteristic parameters of the surface layer through mathematical multi-d...

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Abstract

The invention discloses a method and system for target recognition by a laser composite imaging. The method comprises the following steps of: obtaining a distance image, an intensity image, an azimuthangle, and a pitch angle of each point of a target by a laser composite imaging; reconstructing a three-dimensional point cloud data from the distance image, the intensity image, the azimuth angle, and the pitch angle to obtain the three-dimensional point cloud data, wherein the three-dimensional point cloud data comprises amplitude, height, shape, spectrum, and scatter information of the target;filtering the three-dimensional point cloud data, and estimating a size, the shape, the height, the distance, the scattering, and the physical characteristic parameter of the surface layer of the target by using a multi-dimensional spatial transformation; identifying in a classifier according to an identification function determined by a large number of training samples, combined with a feature database of known typical targets. The method uses the distance image, the intensity image, the azimuth angle, and the pitch angle of the target as the basis of the target recognition to more accurately identify the target, and solves the technical problem that the recognition accuracy of the existing target recognition technology is not high.

Description

technical field [0001] The invention belongs to the technical field of target recognition, in particular to a method and system for target recognition using laser compound imaging. Background technique [0002] At present, there are mainly three technical solutions for target recognition. The first one is to use radar for target recognition. The spatial resolution and distance resolution (image quality) of this program are poor and are susceptible to electromagnetic interference; the second is to use infrared Imaging is used for target recognition. This scheme can only recognize the two-dimensional image of the target but cannot obtain the distance information of the target, and the performance of the infrared imaging device will be affected by the temperature characteristics of the target; the third is the scheme using slice distance gating. The scheme splicing algorithm is complex and difficult to achieve real-time processing. Contents of the invention [0003] In order...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/89
CPCG01S17/89
Inventor 刘波陈念江眭晓林曹昌东颜子恒吴姿妍
Owner 11TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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