Novel gray coded pattern for unwrapping phase in fringe projection based 3D profiling

Mahesh Kondiparthi; Arindam Phani

doi:10.1117/12.869691

7 September 2010 Novel gray coded pattern for unwrapping phase in fringe projection based 3D profiling

Mahesh Kondiparthi, Arindam Phani

Proceedings Volume 7798, Applications of Digital Image Processing XXXIII; 77982L (2010) https://doi.org/10.1117/12.869691
Event: SPIE Optical Engineering + Applications, 2010, San Diego, California, United States

Abstract

A method to reliably extract object profiles even with height discontinuities (that leads to 2nπ phase jumps) is proposed. This method uses Fourier transform profilometry to extract wrapped phase, and an additional image formed by illuminating the object of interest by a novel gray coded pattern for phase unwrapping. Simulation results suggest that the proposed approach not only retains the advantages of the original method, but also contributes significantly in the enhancement of its performance. Fundamental advantage of this method stems from the fact that both extraction of wrapped phase and unwrapping the same were done by gray scale images. Hence, unlike the methods that use colors, proposed method doesn't demand a color CCD camera and is ideal for profiling objects with multiple colors.

Citation Download Citation

Mahesh Kondiparthi and Arindam Phani "Novel gray coded pattern for unwrapping phase in fringe projection based 3D profiling", Proc. SPIE 7798, Applications of Digital Image Processing XXXIII, 77982L (7 September 2010); https://doi.org/10.1117/12.869691

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