條紋投影技術於三維形貌、移動速度、與三維形變量量測的應用

Applications of Fringe Projection Techniques to 3D Profile Inspection, Velocity Detection, and Deformation Sensing

蘇威宏(Wei-Hung Su) ； 羅毓恆(Yu-Heng Lo)

《科儀新知》 219期 (2019/06) Pp. 47-57

摘要

利用條紋投影（fringe projection）技術進行物體表面的三維形貌量測，是十分普遍的作法，本文除了介紹其量測原理，亦藉由公式推導，證明此技術亦可進行待測物各局部區域的三維速度、及三維形變量量測，甚至與形變有關的量測，例如三維熱膨脹系數、物表溫度分佈、表面駐波的分佈等，都可透過這項技術完成。在目前眾多形貌檢測技術中，是唯一一種僅由一張擷取影像，即可達到上述多項功能的光學檢測技術。

並列摘要

Profile measurements performed by fringe projection techniques have been commonly studied for a while. In this article, we extent its applications to the fields of velocity sensing and deformation inspection. Advantages of the proposed method include: (1) capacity of non-scanning and full-field measurements, (2) system simplicity, (3) fast measurement speed, (4) easiness for calibration, and (5) low environmental vulnerability (a major problem for interferometers). Only one-shot measurement is required for data processing. The full-field property makes it possible to inspect several objects at the same time.