DocumentCode :
2263073
Title :
Fast 3D surface reconstruction by unambiguous compound phase coding
Author :
Albarelli, Andrea ; Rodola, Emanuele ; Rota Bulo, S. ; Torsello, Andrea
Author_Institution :
Dipt. di Inf., Univ. Ca´ Foscari, Venice, Italy
fYear :
2009
fDate :
Sept. 27 2009-Oct. 4 2009
Firstpage :
1670
Lastpage :
1677
Abstract :
Phase shift methods have proven to be very robust and accurate for photometric 3D reconstruction. One problem of these approaches is the existence of ambiguities arising from the periodicity of the fringe patterns. While several techniques for disambiguation exist, all of them require the projection of a significant number of additional patterns. For instance, a global Gray coding sequence or several supplemental sinusoidal patterns of different periods are commonly used to complement the basic phase shift technique. In this paper we propose a new pattern strategy to reduce the total number of patterns projected by encoding multiple phases into a single sequence. This is obtained by mixing multiple equal-amplitude sinusoidal signals, which can be efficiently computed using inverse Fourier transformation. The initial phase for each fringe is then recovered independently through Fourier analysis and the unique projected coordinate is computed from the phase vectors using the disambiguation approach based on multiple periods fringes proposed by Lilienblum and Michaelis. With respect to competing approaches, our method is simpler and requires fewer structured light patterns, thus reducing the measurement time, while retaining high level of accuracy.
Keywords :
Fourier analysis; Fourier transforms; computational geometry; image reconstruction; Fourier analysis; basic phase shift technique; disambiguation approach; fast 3D surface reconstruction; global gray coding sequence; inverse Fourier transformation; multiple equal-amplitude sinusoidal signals; phase shift method; phase vectors; photometric 3D reconstruction; sinusoidal patterns; unambiguous compound phase coding; Conferences; Image coding; Image reconstruction; Layout; Photometry; Pixel; Reflective binary codes; Robustness; Spatial resolution; Surface reconstruction;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Computer Vision Workshops (ICCV Workshops), 2009 IEEE 12th International Conference on
Conference_Location :
Kyoto
Print_ISBN :
978-1-4244-4442-7
Type :
conf
DOI :
10.1109/ICCVW.2009.5457484
Filename :
5457484
Link To Document :
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