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A practical 3D measurement system based on projection pattern control techniques
Author(s) -
Cho Genki,
Lu Cunwei
Publication year - 2009
Publication title -
electronics and communications in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.131
H-Index - 13
eISSN - 1942-9541
pISSN - 1942-9533
DOI - 10.1002/ecj.10147
Subject(s) - projection (relational algebra) , computer science , projection method , artificial intelligence , computer vision , system of measurement , sensitivity (control systems) , structured light 3d scanner , algorithm , dykstra's projection algorithm , electronic engineering , engineering , scanner , physics , astronomy
Most of the recent 3D image measurement methods have employed certain pattern projection techniques because of their higher reliabilities. Especially, the intensity‐modulated technique can detect more stripe addresses by a single projection and therefore is very much expected for its practical use in the near future. The traditional techniques of this type, however, have encountered several serious problems where 3D measurements are difficult in sensitivity, speed and accuracy or fatally impossible for unknown objects. In order to solve these problems, we propose an automatic control technique of angle and space frequency of projection pattern. Furthermore, for security of measurement accuracy and measurement speed, projection pattern intensity control technique and optimal intensity‐modulation projection technique are adopted in the proposal measurement system. By using the proposed technique the automatic 3D measurement intended for the geostationary objects and the swaying objects were realized in experimental results. © 2009 Wiley Periodicals, Inc. Electron Comm Jpn, 92(11): 34–41, 2009; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/ecj.10147