Unwrapping of phase maps using mathematical morphology

Pierre Soille

doi:10.1117/12.360970

9 September 1999 Unwrapping of phase maps using mathematical morphology

Pierre Soille

Proceedings Volume 3823, Laser Metrology and Inspection; (1999) https://doi.org/10.1117/12.360970
Event: Industrial Lasers and Inspection (EUROPTO Series), 1999, Munich, Germany

Abstract

This paper describes a new phase unwrapping algorithm based on morphological image processing. A region of interest corresponding to the areas where interferences occur is first extracted. This is achieved by processing the input interferograms with a combination of morphological closing and opening operators. The boundaries of the wrapped fringes are then enhanced by two gradient operators: morphological gradient by erosion for the fringe boundaries with high values and morphological gradient by dilation for the fringe boundaries with low values. Gaps along the boundaries which would lead to errors in the unwrapped phase map are filled in by the watershed transformation. Finally, the wrapped phase map is unwrapped by means of a region growing procedure based on priority queue data structures.

Citation Download Citation

Pierre Soille "Unwrapping of phase maps using mathematical morphology", Proc. SPIE 3823, Laser Metrology and Inspection, (9 September 1999); https://doi.org/10.1117/12.360970

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available