Local adaptive threshold segmentation method for subapture spots of Shack-Hartmann sensor

Li Xuxu; Li Xinyang; Wang Caixia

doi:10.12086/oee.2018.170699

[1] Lukin V P, Botygina N N, Emaleev O N, et al. Wavefront sensors for adaptive optical systems[J]. Proceedings of SPIE, 2010, 7828: 78280P.

[2] Vargas J, González-Fernandez L, Quiroga J A, et al. Shack–Hartmann centroid detection method based on high dynamic range imaging and normalization techniques[J]. Applied Optics, 2010, 49(13): 2409–2416.

[3] Rao C H, Zhu L, Zhang L Q, et al. Development of solar adaptive optics[J]. Opto-Electronic Engineering, 2018, 45(3): 170733.

[4] Jiang W H. Overview of adaptive optics development[J]. Opto- Electronic Engineering, 2018, 45(3): 170489.

[5] Ares J, Arines J. Effective noise in thresholded intensity distribution: influence on centroid statistics[J]. Optics Letters, 2001, 26(23): 1831–1833.

[6] Shen F, Jiang W H. A method for improving the centroid sensing accuracy threshold of Hartmann wavefront sensor[J]. Opto- Electronic Engineering, 1997, 24(3): 1–8.

[7] Ma X Y, Rao C H, Zheng H Q. Error analysis of CCD-based point source centroid computation under the background light[J]. Optics Express, 2009, 17(10): 8525–8541.

[8] Thomas S, Fusco T, Tokovinin A, et al. Comparison of centroid computation algorithms in a Shack–Hartmann sensor[J]. Monthly Notices of the Royal Astronomical Society, 2006, 371(1): 323–336.

[9] Yin X M, Li X, Zhao L P, et al. Adaptive thresholding and dynamic windowing method for automatic centroid detection of digital Shack-Hartmann wavefront sensor[J]. Applied Optics, 2009, 48(32): 6088–6098.

[10] Vyas A, Roopashree M B, Prasad B R. Centroid detection by Gaussian pattern matching in adaptive optics[J]. International Journal of Computer Applications, 2010, 1(26): 32–37.

[11] Baker K L, Moallem M M. Iteratively weighted centroiding for Shack-Hartmann wave-front sensors[J]. Optics Express, 2007, 15(8): 5147–5159.

[12] Ren J F, Rao C H, Li M Q. An adaptive threshold selection method for Hartmann-Shack wavefront sensor[J]. Opto- Electronic Engineering, 2002, 29(1): 1–5.

[13] Li X X, Li X Y, Wang C X. Optimum threshold selection method of centroid computation for Gaussian spot[J]. Proceedings of SPIE, 2015, 9675: 967517.