Two-Dimensional Phase Unwrapping by Direct Elimination of Rotational Vector Fields from Phase Gradients Obtained by Heterodyne Techniques
Two-Dimensional Phase Unwrapping by Direct Elimination of Rotational Vector Fields from Phase Gradients Obtained by Heterodyne Techniques
复制标题
通过从外差技术获得的相位梯度中直接消除旋转矢量场来展开二维相位
DOI：
10.1117/12.312933
复制
发表时间：
1998
期刊：
影响因子：
1.2
通讯作者：
M. Takeda
中科院分区：
文献类型：
--
作者：
T. Aoki;Toshihiro Sotomaru;T. Ozawa;Takashi Komiyama;Y. Miyamoto;M. Takeda
Noting the analogy between electro-magnetic fields and the vector fields of phase gradients obtained by heterodyne techniques, we propose a new algorithm for least-squares phase unwrapping. Instead of solving a Poisson equation for the unwrapped phase map or using Green’s formulation, we directly remove singular points or residues from the measured phase map by superposing sign-reversed vortex fields which cancel out the rotational vector fields associated with the phase singular points.
