Adaptive filtering of white-light interferometry fringe patterns

Guided filtering based surface recovery algorithm for white light interferometry

“…However, using only frequency as a criterion for denoising easily leads to confusion between effective and noise information. Some other researchers have proposed to adopt the adaptive filtering method to eliminate noise of interference signal, such as leastmean-square (LMS) method [11]. Though this method can enhance the performance of coherence peak detection over a wide range of signal-to-noise ratio (SNR), iterative procedure can lead to an efficiency problem.…”