Full-view linear laser scanning 3D imaging calibration device and full-view linear laser scanning 3D imaging calibration method

A laser scanning and three-dimensional imaging technology, applied in image enhancement, image analysis, image data processing, etc., can solve the problems of small application scope, inability to obtain comprehensive information of the object to be scanned, and data loss, etc. The effect of high measurement accuracy and easy maintenance

Active Publication Date: 2016-10-26
HANGZHOU DIANZI UNIV
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Problems solved by technology

[0003] However, the existing line laser scanning 3D imaging device only performs 3D scanning for one angle of the object to be scanned, and at the same time, it is used for the shape change of the surface of the object to be scanned to cause certain data loss on the measured surface, the application range is relatively small, and cannot Get comprehensive information on the object to be scanned

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  • Full-view linear laser scanning 3D imaging calibration device and full-view linear laser scanning 3D imaging calibration method
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  • Full-view linear laser scanning 3D imaging calibration device and full-view linear laser scanning 3D imaging calibration method

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Embodiment Construction

[0041] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0042] like figure 2 As shown, the laser scanning three-dimensional imaging calibration device of the present embodiment includes: four laser emitters (1-1, 1-2, 1-3, 1-4), four industrial cameras (2-1, 2 -2, 2-3, 2-4), four lenses (3-1, 3-2, 3-3, 3-4), one-dimensional moving parts (4), one lens is installed on each industrial camera, The lens is installed sideways to image the calibration plate. An object to be scanned 5 is installed on the one-dimensional moving part 4 .

[0043] Four laser emitters are arranged around the object (5) to be scanned along a ring, and the four laser emitters 1-1, 1-2, 1-3, 1-4 form a circular surface, and the one-dimensional movin...

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Abstract

The invention discloses a full-view linear laser scanning 3D imaging calibration device and a full-view linear laser scanning 3D imaging calibration method. The full-view linear laser scanning 3D imaging calibration device comprises a one-dimensional moving part, a calibration block, laser emitters, and cameras. The calibration block is installed on the one-dimensional moving part, the calibration block is a polyhedron with at least three sides, and the sides of the calibration block are arranged along the circumference. A calibration board is fixed on each side of the calibration block, and the multiple calibration boards are arranged along the circumference. The number of the laser emitters and the number of the cameras correspond to the number of the calibration boards. The laser emitters are annularly arranged and directly face the calibration block. Each camera is equipped with a lens, and the lenses image the calibration boards respectively. The full-view linear laser scanning 3D imaging calibration device of the invention has a simple structure, makes operation and processing easy, is suitable for calibrating fields of view of a variety of sizes, and makes up for the defect that imaging using a single system is not comprehensive.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional laser measurement, and in particular relates to a full-view laser scanning three-dimensional imaging calibration device and method. Background technique [0002] The method of line laser triangulation scanning three-dimensional imaging is a non-contact optical active three-dimensional measurement method, which uses the mathematical principle of trigonometry to obtain the three-dimensional coordinates of the measurement point by calculating and analyzing the optical image with depth information, and outputs it through data processing desired measurement results. Specifically, using a laser as an active light source, the line laser emitted by the laser is projected onto the surface of the object to be scanned, and its reflected image is imaged on the industrial camera through the imaging objective lens. Displacement, and the position of the image point has a unique geometric correspondenc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
CPCG06T2207/30208
Inventor 金星陈庆光周浩
Owner HANGZHOU DIANZI UNIV
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