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3D Laser Scanning Rock Surface Instrument

Author: ZengYong
Tutor: SunChangKu；QuanZuoZhi
School: Tianjin University
Course: Instrumentation Engineering
Keywords: Line structured light Three-dimensional scanning Rock Surface of the instrument Space plane constraint
CLC: TP391.41
Type: Master's thesis
Year: 2010
Downloads: 100
Quote: 1
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Abstract


In this paper, based on line structured light vision measurement principle was developed 3 d laser scanning rock surface instrument, the instrument can be widely used in rock mechanics fractal surface 3 d data measurement, research and other 3 d point cloud data of surface topography measurement and other fields, has wide application prospect. Subject of the main research contents are: 1. According to the characteristics of the rock surface and technical requirements, design the overall scheme of the surface of the instrument, based on line structured light scanning measuring principle, three dimensional laser surface measurement model is established; 2. Study a space plane constraint based fast calibration method of line structured light visual sensor, designs the corresponding calibration targets. This method just put the total surface targets in the camera field of view within the scope of any put several places, gather a group of images, can be a complete plane calibration of the camera internal parameters and light. This method doesn't depend on precise displacement device, calibration process is simple and easy; 3. Design the 3 d laser instrument system structure of the rock surface. Including mechanical structure design, selection of important components of the sensor, etc., to develop the corresponding application software; 4. To develop a set of 3 d laser surface instrument, after calibration of the system measuring accuracy is verified, and the actual scanning measurement experiment, height direction measurement precision is better than 0.02 mm.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
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