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Technology of Large Scale Round Steel Measurement with Multi-structured Light Vision Sensor

Author: SunChangQin
Tutor: WuBin
School: Tianjin University
Course: Measuring Technology and Instruments
Keywords: Large-size round bar Multiple optical stripe structured light vision sensor One-dimensional target Planar target Hessian matrix
CLC: TP274.4
Type: Master's thesis
Year: 2008
Downloads: 153
Quote: 3
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Abstract


The large-sized round steel structured light vision sensor based on multi- light bar due to the increasing demands of modern industrial Bar parameter measurement techniques , the papers studied a way to online , real-time , stable , fast , non-contact measurement technology , and by three lasers and a camera according to claim body constructed measured experimental device, measuring the experimental apparatus is composed of line structures light sensor. The main contents of this paper include: . Structured light vision sensor based on multi- light bar large size steel pipe diameter measurement method , and designed three structured light vision sensor ; 2 . Study based on one-dimensional targets Camera calibration theories and methods to design a one-dimensional target precision ceramic ball and complete experimental verification . One-dimensional target and easy to carry , low cost , maintainability, stability is not good , but the camera calibration based on one-dimensional targets ; 3 . Achieve a high-precision camera calibration planar target based on an arbitrary position and orientation , at the same time not cross ratio based on the perspective projection the degeneration study the structured light vision sensor calibration technique . Experimental results show that the calibration the plane targets Camera based on an arbitrary position and orientation and structured light vision sensor calibration technique has a high calibration accuracy and practicality . 4 the Subpixel technology of image features - round hole center calibration feature points as well as the central feature of the light bar , especially based on the Hessian matrix to achieve high-precision positioning of the center of the light bar ; 5 . Experimental device , and completed round steel measurement of large-size experimental verification .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Data processing, data processing system > Centralized testing and roving detection system
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