Real-Time Measurement of In-Plane Translation and Tilt by Electronic Speckle Correlation

Copyright (c) 1980 The Japan Society of Applied Physics
, , Citation Ichirou Yamaguchi 1980 Jpn. J. Appl. Phys. 19 L133 DOI 10.1143/JJAP.19.L133

1347-4065/19/3/L133

Abstract

A new real-time method of measuring in-plane translation and tilt angle of diffusely reflecting surfaces is presented. We determine the speckle displacement induced by the translation and tilt from the peak position of the cross-correlation function of the outputs of a linear image sensor positioned in the speckle field. From experiments using a microcomputer system we obtained good agreement between theory and experiments for translation between -500 µm to +500 µm and also for tilt angle ranging from -0.3 deg to +0.3 deg. Several ways for extending the capabilities of the method are suggested.

Export citation and abstract BibTeX RIS