Open AccessTime efficient color fringe projection system for 3D shape and color using optimum 3-frequency Selection
Author(s) -
Zonghua Zhang,
Catherine E. Towers,
David P. Towers
Publication year - 2006
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.14.006444
Subject(s) - rgb color model , projector , optics , primary color , digital light processing , absolute phase , artificial intelligence , computer science , color space , structured light 3d scanner , projection (relational algebra) , interferometry , computer vision , physics , algorithm , phase noise , scanner , image (mathematics)
We present a novel color fringe projection system to obtain absolute 3D shape and color of objects simultaneously. Optimum 3-frequency interferometry is used to produce time efficient analysis of the projected fringes by encoding three fringe sets of different pitch into the primary colors of a digital light projector and recording the information on a 3-chip color CCD camera. Phase shifting analysis is used to retrieve subwavelength phase information. Absolute phase across the field is calculated using the 3-frequency method independently at each pixel. Concurrent color data is also captured via the RGB channels of the CCD. Thus full-field absolute shape (XYZ) and color (RGB) can be obtained. In this paper we present the basis of the technique and preliminary results having addressed the issue of crosstalk between the color channels.