Share Email Print
cover

Proceedings Paper • new

Novel triangular pattern generation method for fast and accurate three-dimensional shape measurement
Author(s): Renhao Zheng
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

Three-dimensional (3D) shape measurement of fringe projection profilometry (FPP) with high speed and accuracy is required in many applications. The measurement speed of FPP system is mainly limited by the low frame rate of pattern projection. Although defocusing binary patterns can be used to increase the measurement speed greatly, it will decrease the measurement depth. To this end, a novel triangular pattern generation method is proposed in this paper. By designing and projecting binary strip patterns with focused projector, images of triangular patterns can be then acquired with high frame rate. Fast and accurate 3D shape measurement can be finally obtained by using phase-shifting triangular patterns. Compared with the traditional sinusoidal patterns, the proposed method can improve the projection rate more than 4 times. Moreover, the proposed method will not decrease the measurement depth. Experimental results are given to confirm the validity of the proposed method.

Paper Details

Date Published: 13 November 2019
PDF: 5 pages
Proc. SPIE 11343, Ninth International Symposium on Precision Mechanical Measurements, 113431P (13 November 2019); doi: 10.1117/12.2548776
Show Author Affiliations
Renhao Zheng, Hefei Univ. of Technology (China)


Published in SPIE Proceedings Vol. 11343:
Ninth International Symposium on Precision Mechanical Measurements
Liandong Yu, Editor(s)

© SPIE. Terms of Use
Back to Top