投影パターン自動調節に基づく実用型全自動3次元計測システム

概要

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Most of the recent 3-D 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 near future. The traditional techniques of this type, however, have encountered several serious problems where 3-D measurements are difficult in sensitivity, speed and accuracy or fatally impossible for unknown objects. In order to solve the this problems, we propose an automatic control technique of angle and space frequency of projection pattern. Furthermore, for secure 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 proposed technique the automatic 3-D measurement intended for the geostationary objects and the swaying objects were realized in experimental results.