Absolute phase unwrapping for dual-camera system without embedding statistical features

Chufan Jiang; Song Zhang

doi:10.1117/12.2262564

4 May 2017 Absolute phase unwrapping for dual-camera system without embedding statistical features

Chufan Jiang, Song Zhang

Proceedings Volume 10220, Dimensional Optical Metrology and Inspection for Practical Applications VI; 1022009 (2017) https://doi.org/10.1117/12.2262564
Event: SPIE Commercial + Scientific Sensing and Imaging, 2017, Anaheim, CA, United States

Abstract

This paper proposes an absolute phase unwrapping method for 3D measurement that uses two cameras and one projector. On the left camera image, each pixel has one wrapped phase value which corresponds to multiple projector candidates with different absolute phase values. We use geometric relationship of the system to map projector candidates into right camera candidates. By applying a series of candidate rejection criteria, a unique correspondence pair between two camera images can be determined. Then the absolute phase is obtained by tracing the correspondence point back to projector space. Experimental results demonstrate that the proposed absolute phase unwrapping algorithm can successfully work on both complex geometry and multiple isolated objects measurement.

Citation Download Citation

Chufan Jiang and Song Zhang "Absolute phase unwrapping for dual-camera system without embedding statistical features ", Proc. SPIE 10220, Dimensional Optical Metrology and Inspection for Practical Applications VI, 1022009 (4 May 2017); https://doi.org/10.1117/12.2262564

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