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Applied Optics

Applied Optics


  • Vol. 40, Iss. 5 — Feb. 10, 2001
  • pp: 652–655

Noise reduction in phase maps with 2π phase jumps by means of the heat equation

César Daniel Perciante  »View Author Affiliations

Applied Optics, Vol. 40, Issue 5, pp. 652-655 (2001)

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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

OCIS Codes
(100.5070) Image processing : Phase retrieval
(350.5030) Other areas of optics : Phase

Original Manuscript: May 25, 2000
Revised Manuscript: October 2, 2000
Published: February 10, 2001

César Daniel Perciante, "Noise reduction in phase maps with 2π phase jumps by means of the heat equation," Appl. Opt. 40, 652-655 (2001)

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