Title
Shape defect measurement by fringe projection profilometry and phase-shifting algorithms
Date Issued
01 January 2020
Access level
metadata only access
Resource Type
journal article
Author(s)
Ordones S.
Servin M.
Padilla M.
Flores J.L.
Muñoz A.
Centro de Investigaciones en Optica A. C.
Publisher(s)
SPIE
Abstract
We propose a fringe-projection profilometry technique for shape defects measurement, which can be employed for three-dimensional (3-D) quality inspection. The proposal consists of using a template surface to design phase-shifting algorithms with special-purpose phase response via the frequency transfer function. These algorithms can jointly and directly estimate the spatial phase deviations in a 3-D inspection. Phase deviations correspond to shape differences between the template shape and a testing one. The phase-unwrapping procedure is unnecessary when phase differences are small, as is usual in quality inspections. Experimental results show that our technique is so sensitive that the ripples in a fingerprint can be retrieved.
Volume
59
Issue
1
Language
English
OCDE Knowledge area
Óptica
Scopus EID
2-s2.0-85079322167
Source
Optical Engineering
ISSN of the container
00913286
Sources of information: Directorio de Producción Científica Scopus