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3D reconstruction and measurement method for spatial object via in-orbit hedgehopping imaging

A space object and three-dimensional reconstruction technology, applied in 3D modeling, image data processing, instruments, etc., can solve the problems of increasing task difficulty and difficulty in obtaining ideal results from ground observation, and achieve the effect of reducing difficulty and cost

Active Publication Date: 2017-02-15
NAT UNIV OF DEFENSE TECH
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AI Technical Summary

Problems solved by technology

Affected by atmospheric refraction, cloud and fog occlusion and other factors, it is difficult to obtain ideal results for ground observation, while traditional on-orbit measurement requires the camera platform to provide accurate pose information, which greatly increases the difficulty of the task

Method used

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  • 3D reconstruction and measurement method for spatial object via in-orbit hedgehopping imaging

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Embodiment Construction

[0018] A method for three-dimensional reconstruction and measurement of space objects based on multi-view reconstruction, the specific steps are as follows:

[0019] 1. Fly-by shooting in space to obtain fly-by images

[0020] A fly-by shooting system based on releasing the shooting unit to fly over the space target is used to acquire fly-by images. The fly-by shooting system includes a shooting unit, an on-orbit reconnaissance platform, a space data transmission relay station, and a ground data processing station.

[0021] When space target detection and measurement needs arise, the reconnaissance platform (satellite) approaches the space target through orbital maneuvering, and releases the shooting unit to fly past the target, completes the multi-angle fly-by shooting of the target, and obtains the fly-by image. The flyby image is transmitted by the data transmission module of the shooting unit, and sent to the ground data processing terminal through the space data transmiss...

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Abstract

The invention relates to a 3D reconstruction and measurement method for a spatial object via in-orbit hedgehopping imaging. The method comprises the steps of obtaining hedgehopping images via spatial hedgehopping shooting, carrying out multi-view 3D reconstruction aimed at the spatial object, and converting a 3D model of the spatial object into an absolute scale. Via the method, high-definition shooting and measurement can be carried out on a random spatial object rapidly in response to investigation requirement, and compared with ground investigation, strict observation weather condition and observation windows are not needed; and the object can be reconstructed and measured in a non-contact manner via groups of sequential images including the to-be-measured spatial object instead of providing camera parameters by a shooting platform, and the difficulty and cost of in-orbit measurement are reduced greatly.

Description

technical field [0001] The invention designs a new technology for three-dimensional reconstruction and measurement of space objects, which belongs to the field of stereo vision measurement and space object perception. Background technique [0002] In order to meet the needs of on-orbit detection and maintenance of space targets, it is necessary to photograph and measure the appearance of space targets. Traditional methods are divided into ground observation and on-orbit measurement. Affected by atmospheric refraction, cloud and fog occlusion and other factors, it is difficult to obtain ideal results for ground observation, while traditional on-orbit measurement requires the camera platform to provide accurate pose information, which greatly increases the difficulty of the task. If the on-orbit target measurement task can be completed without relying on the camera parameters provided by the shooting platform, it will greatly improve my country's current space target percepti...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00G01C11/02
CPCG01C11/02G06T17/00
Inventor 张小虎丁少闻杨夏
Owner NAT UNIV OF DEFENSE TECH
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