Novel triangular pattern generation method for fast and accurate three-dimensional shape measurement

Renhao Zheng; Liandong Yu

doi:10.1117/12.2548776

13 November 2019 Novel triangular pattern generation method for fast and accurate three-dimensional shape measurement

Renhao Zheng, Liandong Yu

Proceedings Volume 11343, Ninth International Symposium on Precision Mechanical Measurements; 113431P (2019) https://doi.org/10.1117/12.2548776
Event: International Symposium on Precision Mechanical Measurements 2019, 2019, Chongqing, China

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.

Citation Download Citation

Renhao Zheng and Liandong Yu "Novel triangular pattern generation method for fast and accurate three-dimensional shape measurement", Proc. SPIE 11343, Ninth International Symposium on Precision Mechanical Measurements, 113431P (13 November 2019); https://doi.org/10.1117/12.2548776

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
5 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Binary data

Fringe analysis

3D metrology

Phase shifts

Projection systems

Phase shift keying

Composites

Show All Keywords

Keywords/Phrases

Search In:

Publication Years