Space-variant Shack-Hartmann wavefront sensing based on affine transformation estimation
Abstract
The space-variant wavefront reconstruction problem inherently exists in deep tissue imaging. In this paper,we propose a framework of Shack-Hartmann wavefront space-variant sensing with extended source illumination. The space-variant wavefront is modeled as a four-dimensional function where two dimensionsare in the spatial domain and two in the Fourier domain with priors that both gently vary. Here, the affinetransformation is used to characterize the wavefront space-variant function. Correspondingly, the zonaland modal methods are both escalated to adapt to four-dimensional representation and reconstruction.Experiments and simulations show double to quadruple improvements in space-variant wavefront reconstruction accuracy compared to the conventional space-invariant correlation method.
Cite
@article{arxiv.2210.06400,
title = {Space-variant Shack-Hartmann wavefront sensing based on affine transformation estimation},
author = {Fan Feng and Chen Liang and Dongdong Chen and Ke Du and Runjia Yang and Chang Lu and Shumin Chen and Liangyi Chen and Louis Tao and Heng Mao},
journal= {arXiv preprint arXiv:2210.06400},
year = {2022}
}
Comments
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