Journal
APPLIED OPTICS
Volume 50, Issue 33, Pages 6214-6224Publisher
OPTICAL SOC AMER
DOI: 10.1364/AO.50.006214
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Funding
- Singapore Academic Research Fund Tier 1 [RG11/10]
- Optics and Photonics Society of Singapore
- Nanyang Technological University
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Quality-guided phase unwrapping is a widely used technique with different quality definitions and guiding strategies reported. It is thus necessary to do a detailed comparison of these approaches to choose the optimal quality map and guiding strategy. For quality maps, in the presence of noise, transform-based methods are found to be the best choice. However in the presence of discontinuities, phase unwrapping is itself unresolved and hence quality-guided phase unwrapping is not sufficient. For guiding strategies, classical, two-section, and stack-chain guiding strategies are chosen for comparison. If accuracy is the foremost criterion then the classical guiding strategy with a data structure of indexed interwoven linked list is best. If speed is of essence then the stack-chain guiding strategy is the one to use. (C) 2011 Optical Society of America
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