Windowed phase unwrapping using a first-order dynamic system following iso-phase contours.
Windowed phase unwrapping using a first-order dynamic system following iso-phase contours.
复制标题
DOI：
10.1364/ao.51.007549
复制
发表时间：
2012-11
期刊：
影响因子：
1.9
通讯作者：
J. C. Estrada;J. Vargas;J. M. Flores-Moreno;J. A. Quiroga
中科院分区：
文献类型：
--
作者：
J. C. Estrada;J. Vargas;J. M. Flores-Moreno;J. A. Quiroga
In this work, we show a windowed phase-unwrapping technique that uses a first-order dynamic system and scans the phase following its iso-phase contours. In previous works, we have shown that low-pass first-order dynamic systems are very robust and useful in phase-unwrapping problems. However, it is well known that all phase-unwrapping methods have a minimum signal-to-noise ratio that they tolerate. This paper shows that scanning the phase within local windows and using a path following strategy, the first-order unwrapping method increases its tolerance to noise. In this way, using the improved approach, we can unwrap phase maps where the basic dynamic phase-unwrapping system fails. Tests and results are given, as well as the source code in order to show the performance of the proposed method.
