Colored digital Moire technique for self-occluding shading  in fringe projection profilometry

Jorge L. Flores; Sotero Ordoñes; Geliztle A. Parra-Escamilla

doi:10.1117/12.2682672

20 October 2023 Colored digital Moire technique for self-occluding shading in fringe projection profilometry

Jorge L. Flores, Sotero Ordoñes, Geliztle A. Parra-Escamilla

Proceedings Volume 12686, Infrared Remote Sensing and Instrumentation XXXI; 126860B (2023) https://doi.org/10.1117/12.2682672
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

In this work, we presented a phase demodulation technique for fringe analysis in fringe projection profilometry based on digital moiré and the co-phase technique. The approach involves the use of stereo illumination and the simultaneous projection and acquisition of two π-shifted sinusoidal patterns from each projector. By taking advantage of color multiplexing, we code the sinusoidal patterns in the red and blue channels of the RGB images, so we need to project and acquire one image for each digital light projector. The phase demodulation consists of two steps: first, digitally generating the moiré pattern for each RGB image utilizing the spatial phase carrier; second, computing the analytic signals for the two moiré patterns via a third-order, low-pass Butterworth filter in the frequency domain; third, calculate the final phase by merging the two analytic signals using the co-phasing technique.

Conference Presentation

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jorge L. Flores, Sotero Ordoñes, and Geliztle A. Parra-Escamilla "Colored digital Moire technique for self-occluding shading in fringe projection profilometry", Proc. SPIE 12686, Infrared Remote Sensing and Instrumentation XXXI, 126860B (20 October 2023); https://doi.org/10.1117/12.2682672

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