Centroids analysis for circle of confusion in reverse Hartmann test

Zhao Zhu^{1, 2}, Hui Mei^{1, 2, †}, Xia Zheng-Zheng^{1, 2}, Zhao Yue-Jin^{1, 2}

(color online) Gray compensation with 2D Gaussian fitting for the fringes in the (a) horizontal and (b) vertical directions. The reflector surface is flat.