Holographic and weak-phase projection system for 3D shape reconstruction using temporal phase unwrapping

C. A. González; A. Dávila; G. Garnica

doi:10.1117/12.734857

24 September 2007 Holographic and weak-phase projection system for 3D shape reconstruction using temporal phase unwrapping

C. A. González, A. Dávila, G. Garnica

Author Affiliations +

Proceedings Volume 6696, Applications of Digital Image Processing XXX; 669621 (2007) https://doi.org/10.1117/12.734857
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

Two projection systems that use an LCoS phase modulator are proposed for 3D shape reconstruction. The LCoS is used as an holographic system or as a weak phase projector, both configurations project a set of fringe patterns that are processed by the technique known as temporal phase unwrapping. To minimize the influence of camera sampling, and the speckle noise in the projected fringes, an speckle noise reduction technique is applied to the speckle patterns generated by the holographic optical system. Experiments with 3D shape reconstruction of ophthalmic mold and other testing specimens show the viability of the proposed techniques.

Citation Download Citation

C. A. González, A. Dávila, and G. Garnica "Holographic and weak-phase projection system for 3D shape reconstruction using temporal phase unwrapping", Proc. SPIE 6696, Applications of Digital Image Processing XXX, 669621 (24 September 2007); https://doi.org/10.1117/12.734857

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