摘要
相位展开 (PhU)问题从理论上讲是一个不适定问题。根据被测物理量的整体连续性 ,提出了一种基于最小截面差的相位展开方法。理论分析和对实验条纹图的处理结果表明 ,该方法特别适合于具有相位间断大于π ,条纹欠采样及随机噪声等条纹图的相位展开。同支切 (Branchcuts)法相比 ,该方法具有算法简单、计算量小且可靠度高的特点 ,具有一定的实用性。
Phase unwrapping is an ill posed problem. A new 2-D phase unwrapping method, based on the global continuity of the physical information, is proposed in this paper. The method, which is derived from the least cross-section-difference of the physical quantity, has shown to produce a reliable result in the presence of error source, such as noise, phase discontinuity more than π and insufficient sampling, etc. In addition, the algorithm is very simple and fast.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2002年第7期647-651,共5页
Chinese Journal of Lasers
基金
国家自然科学基金资助项目 (10 0 72 0 17)
非线性力学国家重点实验室开放课题
