New noise detection scheme for noisy phase map of objects containing height discontinuities

Jing-Feng Weng; Yu-Lung Lo

doi:10.1117/12.851428

14 April 2010 New noise detection scheme for noisy phase map of objects containing height discontinuities

Jing-Feng Weng, Yu-Lung Lo

Proceedings Volume 7522, Fourth International Conference on Experimental Mechanics; 75224A (2010) https://doi.org/10.1117/12.851428
Event: Fourth International Conference on Experimental Mechanics, 2009, Singapore, Singapore

Abstract

In the wrapped phase map of the 3D object containing the height discontinuities, this paper develops an enhanced noise detection scheme to enable the three types of noise, the speckle noise, the residual noise, and the noise at the lateral surface of height discontinuities, to be efficiently and simultaneously detected with a greater degree of precision. Since any threshold of this scheme is related to the number of noise and does not influence the phase jumps, the application with filtering operations enables the edges of the phase jumps without smearing and the application with the phase unwrapping algorithms enables the unwrapping path to avoid the positions of the noise, especially, at the height discontinuities.

Citation Download Citation

Jing-Feng Weng and Yu-Lung Lo "New noise detection scheme for noisy phase map of objects containing height discontinuities", Proc. SPIE 7522, Fourth International Conference on Experimental Mechanics, 75224A (14 April 2010); https://doi.org/10.1117/12.851428

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