Three-dimensional data acquisition system and acquisition method based on two-axis rotation platform

A technology of rotating table and rotating platform, which is applied in the field of three-dimensional measurement and can solve the problems of low calibration efficiency and high cost

Active Publication Date: 2014-11-19
SHENZHEN UNIV
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Problems solved by technology

These methods need to make a standard plane or a high-precision standard sphere in advance, and the cost of calibration is high; the binocular 3D sensor needs to be calibrated before the rotation axis is calibrated, and the calibration efficiency is low

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  • Three-dimensional data acquisition system and acquisition method based on two-axis rotation platform

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Embodiment Construction

[0039] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0040] Such as figure 1 As shown, the present invention provides a three-dimensional imaging system based on a two-axis rotating table, including a two-axis rotating table 2 , a binocular three-dimensional sensor 1 and a computer system 3 . The two-axis turntable 2 includes a swing axis 201 , a rotation axis 202 and a stage 203 . The stage 203 is used to fix the target. The stage 203 can swing around the swing axis 201 under the drive of the swing axis 201 , and rotate around the rotation axis 202 under the drive of the rotation axis 202 , so as to be in different postures. In this embodiment, the rotating shaft 202 and the swinging shaft 201 are driven by a stepping motor, and the stepping motor can be connected to the computer system 3 . The c...

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Abstract

The invention relates to the technical field of three-dimensional measuring, and especially relates to a three-dimensional imaging system based on a two-axis rotation platform, and a calibration method thereof. The technical scheme provided by the invention mainly comprises three important parts: 1, calibrating a binocular three-dimensional sensor; 2, calibrating the two-axis rotation platform; and 3, according to calibration results of the binocular three-dimensional sensor and the two-axis rotation platform, automatically matching the depth images of a detected object from different visual angles. Through the three-dimensional imaging system based on the two-axis rotation platform, and the calibration method thereof, the binocular three-dimensional sensor and the two-axis rotation platform can be simultaneously calibrated, and three-dimensional images of the detected object can be automatically matched by use of the calibration results.

Description

technical field [0001] The invention relates to the technical field of three-dimensional measurement, in particular to a three-dimensional imaging system based on a two-axis rotary table and a calibration method thereof. Background technique [0002] The measurement technology based on the binocular 3D sensor is an important part of the computer 3D detection technology. It uses the left and right cameras to form a triangulation relationship, and reconstructs the 3D coordinates of the feature points in space. Usually, the structured light projection system is used to encode the structured light, stripes and other encoded images on the surface of the object to obtain dense three-dimensional data. Due to the occlusion of the object itself, in order to obtain the complete 360-degree three-dimensional surface data of the object, it is necessary to integrate a two-axis rotary table in the three-dimensional imaging system, and obtain the three-dimensional surface of the measured ob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/24
Inventor 刘晓利何懂彭翔殷永凯
Owner SHENZHEN UNIV
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