Abstract

A method of linearly coded profilometry is proposed. It uses linear-structure light with isosceles triangle teeth to code the object being measured and a phase-shifting technique to decode the profile. For reducing the effect of noise more than three equally spaced samples are used, and, according to the least-squares method, the general formulas of the decoded phase are given. The experimental results of a model of a head are shown.

© 1999 Optical Society of America

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Linearly coded profilometry

Qiang Fang and Sunde Zheng
Appl. Opt. 36(11) 2401-2407 (1997)

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