Abstract

This Letter presents a method for real-time 3D measurements based on three-color digital holographic interfero metry. The optical setup is considerably simplified, since the reference beams are combined into a unique beam. A convolution algorithm allows the three monochrome images to be superposed to provide simultaneous full-field 3D measurements. Experimental results confirm the suitability of the proposed method.

© 2010 Optical Society of America

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References

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2009

2008

2007

2004

2003

2002

1999

Alfieri, D.

Bingham, P. R.

Bohineust, X.

V. Linet, X. Bohineust, and F. Dupuy, in Proceedings of 3rd French-German Congress on Applications of Holography(1991).

Charriere, F.

Colomb, T.

Coppola, G.

Cuche, E.

De Nicola, S.

Demoli, N.

Depeursinge, C.

Desse, J. M.

Dupuy, F.

V. Linet, X. Bohineust, and F. Dupuy, in Proceedings of 3rd French-German Congress on Applications of Holography(1991).

Emery, Y.

Ferraro, P.

Finizio, A.

Kato, J.

Khmaladze, A.

Kim, M.

Kuhn, J.

Leval, J.

Li, J. C.

Linet, V.

V. Linet, X. Bohineust, and F. Dupuy, in Proceedings of 3rd French-German Congress on Applications of Holography(1991).

Lo, C.-M.

Mann, C. J.

Marquet, P.

Matsumura, T.

Montfort, F.

Mounier, D.

Paquit, V. C.

Pedrini, G.

Peng, Z.

Picart, P.

Pierattini, G.

Santoyo, F. M.

Schedin, S.

Tankam, P.

Tiziani, H. J.

Tobin, K. W.

Torzynski, M.

Vukicevic, D.

Yamaguchi, I.

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Figures (4)

Fig. 1
Fig. 1

Experimental setup: M1–M5, flat mirrors; SF, spatial filter; d 0 = 1630 nm ; x 0 = 56.9 mm ; y 0 = 52.1 mm .

Fig. 2
Fig. 2

(a) R, (b) G, and (c) B reconstructed objects using convolution algorithm. (d) Monochrome image obtained by averaging the individual R, G, and B images.

Fig. 3
Fig. 3

(a) R, (b) G, and (c) B wrapped phase changes computed using three-color holograms. (d) G-only wrapped phase change.

Fig. 4
Fig. 4

(a)–(c) displacement field { u x , u y , u z } obtained form the set of data. (d) Measured probability density error for the real-time 3D measurement: solid curve, experimental; dashed curve, Gaussian fit.

Equations (1)

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[ u x u y u z ] = 1 2 π α [ 1 + cos ( θ G ) 1 cos ( θ R ) 0 sin ( θ G ) ( 1 + cos ( θ B ) ) / sin ( θ B ) sin ( θ R ) ( 1 + cos ( θ B ) ) / sin ( θ B ) α / sin ( θ B ) sin ( θ G ) sin ( θ R ) 0 ] × [ λ R Δ φ R λ G Δ φ G λ B Δ φ B ] ,

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