Calibration of the projector in structured light systems using Brox optical flow

Hua Zhang; Yuxin Tang; Ping Sun; Nan Shao

doi:10.1117/12.2644205

9 September 2022 Calibration of the projector in structured light systems using Brox optical flow

Hua Zhang, Yuxin Tang, Ping Sun, Nan Shao

Proceedings Volume 12328, Second International Conference on Optics and Image Processing (ICOIP 2022); 123280D (2022) https://doi.org/10.1117/12.2644205
Event: Second International Conference on Optics and Image Processing (ICOIP 2022), 2022, Taian, China

Abstract

In this work, we propose a new calibration technique for locating the projector in the structured light measurement system. Using Brox optical flow, the estimation of three coordinate components of the projector only requires two images captured before and after the motion of the calibration plate. The calibration principle presented on geometry depicts the relation between the position of the projector and that of the camera, to the optical flow caused by the movement of the calibration plate. The accuracy of the proposed method is verified by numerical simulation. The measurement system is calibrated by using the proposed calibration method and by Falcao’s method simultaneously for comparison. After calibration, eight-step phase shift technique of a recognized high precision is performed to reconstruct the 3-D shape. The results show that the height distribution of the specimens is in good agreement with its true values, and the maximum absolute error is less than 0.1 mm.

Citation Download Citation

Hua Zhang, Yuxin Tang, Ping Sun, and Nan Shao "Calibration of the projector in structured light systems using Brox optical flow", Proc. SPIE 12328, Second International Conference on Optics and Image Processing (ICOIP 2022), 123280D (9 September 2022); https://doi.org/10.1117/12.2644205

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
11 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Calibration

Projection systems

Cameras

Optical flow

Structured light

Fringe analysis

Distortion

Show All Keywords

Keywords/Phrases

Search In:

Publication Years