Noise Reduction in Phase Maps with 2 π Phase Jumps by Means of the Heat Equation
Applied Optics, Vol. 40, Issue 5, pp. 652-655 (2001)
http://dx.doi.org/10.1364/AO.40.000652
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Abstract
A new algorithm for filtering noise in phase maps that contain 2π discontinuities is presented. The algorithm is based on a thermal model that uses the heat equation to perform low-pass filtering. A similar approach is used in image processing for filtering noise, but the edges are generally distorted because of their inherent high frequencies. A solution that consists in redefining the spatial derivatives is proposed here. Simulation results are presented and discussed.
© 2001 Optical Society of America
[Optical Society of America ]
OCIS Codes
(100.5070) Image processing : Phase retrieval
(350.5030) Other areas of optics : Phase
Citation
César Daniel Perciante, "Noise Reduction in Phase Maps with 2 π Phase Jumps by Means of the Heat Equation," Appl. Opt. 40, 652-655 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-5-652
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