A new color structured light coding method for three-dimensional measurement of isolated objects

Ke Ma; Qican Zhang

doi:10.1117/12.860372

2 August 2010 A new color structured light coding method for three-dimensional measurement of isolated objects

Ke Ma, Qican Zhang

Proceedings Volume 7790, Interferometry XV: Techniques and Analysis; 77901B (2010) https://doi.org/10.1117/12.860372
Event: SPIE Optical Engineering + Applications, 2010, San Diego, California, United States

Abstract

A new coding method is proposed for measuring the three-dimensional (3D) shape of spatially isolated objects . Based on Gray Code and sinusoidal stripe, this coded fringe pattern whose RGB components comprise the multiplications of three different frames in Gray Code and sinusoidal stripes, appears to be digital color coded sinusoidal fringes. The digital color coded sinusoidal fringe pattern is created by software on a computer and then projected to the tested object's surface by a projector, and the image of the object is captured by a camera positioned at an angle different from that of the projector, then the image is processed, color Gray Codes are used to obtain the phase order and sinusoidal stripes are used to get the wrapped phase, then the wrapped phase can be unwrapped and the 3D surface information can be retrieved. With only one image, 3D shape of the isolated objects can be exactly reconstructed, thus the speed is limited only by the frame rate of camera. The principle of this technique is described and an actual measurement is presented, the result of the reconstructed shapes proves the correctness and feasibility of this new coding method.

Citation Download Citation

Ke Ma and Qican Zhang "A new color structured light coding method for three-dimensional measurement of isolated objects", Proc. SPIE 7790, Interferometry XV: Techniques and Analysis, 77901B (2 August 2010); https://doi.org/10.1117/12.860372

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