New amplitude weighted filtering technique for noise reduction in images with 2pi phase jumps

Armando Albertazzi Jr.; Rui Seara; Policarpo B. Uliana

doi:10.1117/12.165466

10 December 1993 New amplitude weighted filtering technique for noise reduction in images with 2π phase jumps

Armando Albertazzi Jr., Rui Seara, Policarpo B. Uliana

Proceedings Volume 2003, Interferometry VI: Techniques and Analysis; (1993) https://doi.org/10.1117/12.165466
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

This paper presents an interesting algorithm, suitable for substantial noise reduction in images with 2(pi) phase jumps. It first applies a cosine transform to the phase map associated with the corresponding fringe pattern then filters (low pass) the resulting images and computes phase again from both images. Since the cosine transform is invariant to a 2(pi) phase jumps the low pass filtering does not distort the measuring signal in such regions.

Citation Download Citation

Armando Albertazzi Jr., Rui Seara, and Policarpo B. Uliana "New amplitude weighted filtering technique for noise reduction in images with 2π phase jumps", Proc. SPIE 2003, Interferometry VI: Techniques and Analysis, (10 December 1993); https://doi.org/10.1117/12.165466

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