DocumentCode :
2789791
Title :
Intensity modulated moire and its intensity-phase analysis
Author :
Lu, Cunwei ; Yamaguchi, Akashi ; Inokuchi, Seiji
Author_Institution :
Graduate Sch. of Eng. Sci., Osaka Univ., Japan
Volume :
2
fYear :
1998
fDate :
16-20 Aug 1998
Firstpage :
1791
Abstract :
Moire topography has the advantage that it just requires a single image, but it cannot discern the fringe order. So, it is difficult to discern the connection among fringes in the case where the fringe orders are not continuous. In our work, an intensity modulated moire is presented. By modulating the transmission of projection and observation grating, the moire pattern whose fringe intensity changes with its order can be produced. The fringe order can be obtained easily from its intensity, so the skeleton of fringes in every order can be extracted to discern the global 3-D shape by intensity analysis. In the same time, we can segment the moire pattern by its fringe order. In every segment, the accurate 3-D shape among the skeletons can be calculated by phase analysis
Keywords :
image texture; image thinning; intensity modulation; moire fringes; shape measurement; surface topography measurement; fringe orders; global 3D shape; intensity analysis; intensity modulated moire; intensity-phase analysis; moire pattern; moire topography; observation grating; skeletons; Amplitude modulation; Charge coupled devices; Frequency; Gratings; Humans; Intensity modulation; Optical reflection; Pattern analysis; Phase measurement; Phase modulation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Pattern Recognition, 1998. Proceedings. Fourteenth International Conference on
Conference_Location :
Brisbane, Qld.
ISSN :
1051-4651
Print_ISBN :
0-8186-8512-3
Type :
conf
DOI :
10.1109/ICPR.1998.712076
Filename :
712076
Link To Document :
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