Moment-based space-variant Shack-Hartmann wavefront reconstruction

Fan Feng; Chen Liang; Dongdong Chen; Ke Du; Runjia Yang; Chang Lu; Shumin Chen; Wenting He; Pingyong Xu; Liangyi Chen; Louis Tao; Heng Mao

doi:10.1016/j.optcom.2023.129515

arXiv · 2304.06283

Moment-based space-variant Shack-Hartmann wavefront reconstruction

Fan Feng·Chen Liang·Dongdong Chen·Ke Du·Runjia Yang·Chang Lu·Shumin Chen·Wenting He·Pingyong Xu·Liangyi Chen·Louis Tao·Heng Mao

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Abstract

Based on image moment theory, an approach for space-variant Shack-Hartmann wavefront reconstruction is presented in this article. The relation between the moment of a pair of subimages and the local transformation coefficients is derived. The square guide 'star' is used to obtain a special solution from this relation. The moment-based wavefront reconstruction has a reduced computational complexity compared to the iteration-based algorithm. Image restorations are executed by the tiling strategy with 5 $\times$ 5 PSFs as well as the conventional strategy with a global average PSF. Visual and quantitative evaluations support our approach.

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Fan Feng, Chen Liang, Dongdong Chen, Ke Du, Runjia Yang, Chang Lu, Shumin Chen, Wenting He, Pingyong Xu, Liangyi Chen, Louis Tao, Heng Mao. 2023-04-13. Moment-based space-variant Shack-Hartmann wavefront reconstruction. https://doi.org/10.1016/j.optcom.2023.129515

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