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Method for obtaining three-dimensional information of space non-cooperative object

A technology of space objects and three-dimensional information, applied in the re-radiation of electromagnetic waves, instruments, measuring devices, etc., can solve the problems of large amount of image data, complex processing and analysis algorithms, slow calculation speed, algorithm accuracy and real-time performance, etc. The effect of increased performance, real-time and accuracy assurance

Inactive Publication Date: 2007-09-12
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0006] The invention provides a method for acquiring three-dimensional information of non-cooperative objects in space, aiming to overcome the large amount of image data, relatively complex processing and analysis algorithms, slow calculation speed, and the balance between the accuracy and real-time performance of the existing methods question

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  • Method for obtaining three-dimensional information of space non-cooperative object
  • Method for obtaining three-dimensional information of space non-cooperative object
  • Method for obtaining three-dimensional information of space non-cooperative object

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Embodiment Construction

[0057] The processing flow of the present invention is as shown in Figure 1:

[0058] (1) In the short range (200m ~ 100m), the imaging size of space objects on the imaging plane of the imaging system is small (only a few pixels to dozens of pixels), and the resolution of the target imaging is low, showing points or spots characteristic. At this time, the projection of the space target star from the 3D object point to the 2D image plane causes a large loss of 3D information. Through the extraction of target information in the sequence of visible light imaging sensor images, the small target detection and tracking method is used to capture and locate space targets, estimate rough distance information, and use the capture and positioning information to adjust and position the laser radar pointing, and measure the space. The relative distance and relative speed of the object;

[0059] (2) Carry out three-dimensional reconstruction of space objects in the range of ultra-short di...

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Abstract

This invention relates to the obtaining method of a kind of space non-cooperation objects three dimensional information, belong to digital image processing. This invention is designed to observe the close-range approaching course of star and space non-cooperation objects, order include:(1) processing procedure of closer object estimate, from object distance 200m to 100m, (2) processing procedure of exceed closer object estimate, and object distance 100m to 5m;(3) Processing procedure of terrible closer object estimate, and object distance 5m to 0m. Along the successive approximation of star and space object, estimated accuracy of each handle parameter increasing, error drop off, reliability increasing, real-time character and accuracy all get guarantee; Can be use for independence image guide when slowly move to object that possess polyhedron character under unknown environment.

Description

technical field [0001] The invention belongs to a digital image processing method, in particular to a method for acquiring three-dimensional information of a non-cooperative object in space, which is used for autonomous image navigation in the process of gradually approaching an object with polyhedron characteristics in an unknown environment. Background technique [0002] Image navigation technology is that the navigation device uses the sensor to obtain the information of the objects near the heading, image processing and image analysis are performed on the acquired image, and the accurate position and height of the navigation device are determined by means of identification and analysis of the captured scene, or used as The navigation system automatically avoids obstacles, or displays useful information after processing to remind operators. [0003] For the problem of autonomous image navigation, the current method is to obtain navigation information from the captured ima...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/02G01S17/88
Inventor 张天序张坤万鑫
Owner HUAZHONG UNIV OF SCI & TECH
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