Ramaiah Jagadesh, Gannavarpu Rajshekhar
Appl Opt. 2022 Oct 1;61(28):8180-8189. doi: 10.1364/AO.469798.
The article presents a method to estimate multiple phase maps from a moiré fringe signal obtained using digital holographic interferometry. The proposed method uses a unitary transformation based signal subspace approach, and shows high robustness against noise. In addition, the method facilitates the estimation of multiple phase maps in a single shot operation without the need for spectral filtering or multiple images. The computational efficiency of the method was improved by a high performance implementation using a graphics processing unit. The practical utility of the proposed method is demonstrated using simulation and experiment results.
本文提出了一种从使用数字全息干涉测量法获得的莫尔条纹信号中估计多个相位图的方法。所提出的方法采用基于酉变换的信号子空间方法，并且对噪声具有高度鲁棒性。此外，该方法有助于在单次操作中估计多个相位图，而无需频谱滤波或多张图像。通过使用图形处理单元的高性能实现提高了该方法的计算效率。使用模拟和实验结果证明了所提出方法的实际效用。
