Chinese Journal of Lasers, Volume. 29, Issue 10, 929(2002)
Adaptive Filter for Unwrapping Noisy Phase Image in Phase-stepping Interferometry
An adaptive filter for preprocessing wrapped phase image with high noise content has been developed. The window size of this median filter is adjustable according to its location in the noisy phase image. Phase unwrapping can then be done to recover the real phase image without the hampering influence of noise, especially the noise near the phase jumps. Both numerical simulation and experimental results used to examine the effectiveness of this adaptive filter are presented.
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[in Chinese], [in Chinese], [in Chinese]. Adaptive Filter for Unwrapping Noisy Phase Image in Phase-stepping Interferometry[J]. Chinese Journal of Lasers, 2002, 29(10): 929