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Three-dimensional reconstruction device and method of dual-rotation laser

A three-dimensional reconstruction and double-rotation technology, applied in the direction of optical devices, measuring devices, instruments, etc., can solve the problems of limited scanning coverage, achieve comprehensive coverage, light and flexible installation, and improve integrity

Active Publication Date: 2017-03-22
SOUTH CHINA UNIV OF TECH
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  • Claims
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AI Technical Summary

Problems solved by technology

Overcome the shortcomings of the limited scanning coverage of existing 3D reconstruction devices

Method used

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  • Three-dimensional reconstruction device and method of dual-rotation laser
  • Three-dimensional reconstruction device and method of dual-rotation laser
  • Three-dimensional reconstruction device and method of dual-rotation laser

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Embodiment

[0050] Such as Figures 1 to 3 shown. The invention discloses a three-dimensional reconstruction device of a double-rotation laser, which includes a base 11 for placing a measured object 2, a support rod 1 arranged on one side of the base 11, two gear reduction devices 7, and a driving Two groups of stepping motors 6 rotated by two gear reduction devices 7, left-line structured light projector 4, right-line structured light projector 5, and camera 3;

[0051] The support rod 1 is axially sleeved with two sliding sleeves, which are divided into a first slider 8 and a second slider 81;

[0052] The two gear reduction devices 7 are respectively installed on the two ends of the crossbar 10, and the middle part of the crossbar 10 is fixed on the first slider 8; the left-line structured light projector 4 and the right-line structured light projector 5 are respectively installed on the gears of the two gear reduction devices 7, when the stepping motor 6 drives the gear reduction de...

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Abstract

The invention discloses a three-dimensional reconstruction device and method of dual-rotation laser. The three-dimensional reconstruction device comprises two gear speed reducers, two stepping motors used for driving the gear speed reducers to rotate, left and right line structure light projectors and a camera; the left and right line structure light projectors are installed on gears of the two gear speed reducers, and when the stepping motors drive the gear speed reducers to rotate, the left and / or right line structure light projector follows the gear speed reducer to perform 360-degree rotation, so as to scan a detected object; and left and right line structure light scans the target object to obtain point cloud data of the target object, the left and right line structure light is irradiated on a calibration plate, light plane equations of the left and right line structure light of a camera coordinate system is obtained, through calculation of a laser rotation angle, hot spots projected on the object when the target object is scanned is converted into three-dimensional camera coordinates, and the three-dimensional camera coordinates obtained by left and right laser scanning are unified to the same coordinate system to obtain final point cloud data.

Description

technical field [0001] The invention relates to a three-dimensional reconstruction device, in particular to a three-dimensional reconstruction device and method of a double-rotation laser. Background technique [0002] Some characteristics of the line structured light 3D vision sensor, such as high measurement accuracy, non-contact, large range and fast speed, have made this technology widely used in industrial fields, 3D reconstruction and reverse engineering. [0003] There are some existing calibration methods for linear structured light vision sensors. Since the manufacturing accuracy of the three-dimensional calibration target is not easy to guarantee, the calibration results obtained by these methods in actual use will be greatly affected. Among the widely used line-structured light calibration methods based on planar calibration targets, the line-structured light vision sensor calibration method proposed by Zhou Fuqiang et al. is an excellent representative. The inte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/25
CPCG01B11/2513
Inventor 陈安张伟锋胡跃明
Owner SOUTH CHINA UNIV OF TECH
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