Inhibiting noise of light spot image

WANG Wei; CHEN Huai-xin

LASER TECHNOLOGY > 2007 > 31(1): 54-56,60.

WANG Wei, CHEN Huai-xin. Inhibiting noise of light spot image[J]. LASER TECHNOLOGY, 2007, 31(1): 54-56,60.

Citation:

WANG Wei, CHEN Huai-xin. Inhibiting noise of light spot image[J]. LASER TECHNOLOGY, 2007, 31(1): 54-56,60.

Citation:

WANG Wei, CHEN Huai-xin. Inhibiting noise of light spot image[J]. LASER TECHNOLOGY, 2007, 31(1): 54-56,60.

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Inhibiting noise of light spot image

WANG Wei¹,
CHEN Huai-xin²

1.
Department of Physics, Huaibei Coal Industry Teachers College, Huaibei 235000, China;
2.
School of Electronics and Information, Sichuan University, Chengdu 610064, China

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Received Date: October 31, 2005
Revised Date: March 26, 2006
Published Date: February 24, 2007

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Abstract

Abstract

In the adaptive optical systems,the precision of Hartmann-Shack wavefront sensor relies on the centroid detecting accuracy,but the noise in the light spot image lead to centroid detecting error.So the noise should be inhibited before estimating centroid.According to analyzing five kinds of common filtering methods by computer simulation and experiment,the two nonlinear filtering algorithms are showed to be the optimal selection.The study will offer valuable reference in enhancement of the precision of wavefront measurement.
- information optics,
- inhibiting noise,
- Hartmann-Shack wavefront sensor,
- centroid detecting accuracy,
- nonlinear filtering algorithm

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References

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