Open AccessColor-encoded fringe projection for 3D shape measurements
Author(s) -
WeiHung Su
Publication year - 2007
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.013167
Subject(s) - structured light 3d scanner , optics , classification of discontinuities , computer science , fourier transform , phase unwrapping , computation , computer vision , projection (relational algebra) , artificial intelligence , structured light , phase (matter) , phase retrieval , interferometry , algorithm , physics , mathematics , mathematical analysis , scanner , quantum mechanics
A novel technique using color-encoded stripes embedded into a sinusoidal fringe pattern for finding the absolute shape of an object is proposed. Phases of the projected fringes on the surface are evaluated by Fourier transform method. Unwrapping is then performed with reference to the color-encoded stripes. When surfaces of interest contain large depth discontinuities, the color-encoded stripes can easily identify the fringe order. Compared with other phase unwrapping schemes, this method offers many major advantages, including: (1) very low computation cost for the 3D reconstruction, (2) reliable phase unwrapping to complex objects, especially for surfaces with large depth discontinuities, (3) only one-shot measurement is required, and (4) robust performance to analyze dynamic objects.