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题名:
An image processing method to reduce Shack-Hartamnn wavefront sensor's centroid error for daytime detecting
作者: Yanyan Zhang ; Mei Li ; Changhui Rao
出版日期: 2008
会议名称: Proceedings of SPIE,Vol.7130
学科分类: 自适应光学
中文摘要: Shack-Hartamn(S-H) wavefront sensor is widely used in adaptive optics systems. Its detecting centroid error is one of the main error sources in adaptive optical systems. There are many factors affecting the detecting accuracy such as readout noise and background level of CCD camera, number of detecting pixels, and photon shot noise. Because of these noises when it works at daytime, the small target which is detected can not be distinguished. Therefore, the centroid precision is greatly descended. The traditional method is subtracting a threshold. But this method have many disadvantages novel image processing method is proposed to improve the centroid detecting precision when Shack-Hartamnn working at daylight. The morphologic and the fuzzy enhancement are applied in this image processing algorithm before subtracting the threshold. The principle of these algorithms are described in detail; the computer simulation results are also presented. It is shown that this method is more useful for Shack-Hartamnn wavefront sensor to reduce its centroid error when it works at daytime than only subtracting the threshold.
收录类别: 其他
语种: 中文
卷号: 7130
文章类型: 会议论文
页码: 71303F
内容类型: 会议论文
URI标识: http://ir.ioe.ac.cn/handle/181551/1847
Appears in Collections:自适应光学技术研究室(八室)_会议论文

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Recommended Citation:
Yanyan Zhang,Mei Li,Changhui Rao. An image processing method to reduce Shack-Hartamnn wavefront sensor's centroid error for daytime detecting[C]. 见:Proceedings of SPIE,Vol.7130.
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文件名: 2008-037.pdf
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