Quality-guided phase unwrapping technique: comparison of quality maps and guiding strategies

作者：Ming Zhao, Lei Huang, Qican Zhang, Xianyu Su, Anand Asundi, Qian Kemao · 发表于：Applied Optics · 年份：2011 · DOI：10.1364/ao.50.006214 · 被引用次数：378 · 研究领域：Optical measurement and interference techniques、Structural Health Monitoring Techniques、Non-Destructive Testing Techniques

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.