| 题名: | A new method based on morphologic filter and ant colony algorithm to enhance centroid detection accuracy of Shack-Hartmann wavefront sensor |
| 作者: | Yanyan Zhang; MEi Li; Changhui Rao
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| 出版日期: | 2009
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| 会议名称: | Proceedings of SPIE
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| 会议日期: | 2009
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| 通讯作者: | Yanyan Zhang
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| 中文摘要: | Shack-Hartmann wavefront sensor (SHWFS) is widely used in adaptive optics systems. Its centroid detecting error is one of the main error sources in adaptive optical systems. There are many factors affecting the detecting accuracy such as photon shot noise, readout noise, background level of CCD camera and number of detecting pixels. It is very effective to enhance the centroid accuracy by setting the threshold for the images of the SHWFS. But in daytime, the sky background is strong and changes very fast. The threshold cannot be chosen automatically Either. In this paper, a new method based on the morphologic filter and ant colony algorithm is proposed to improve the SHWFS centroid detecting accuracy. The principle of the morphologic filter and the ant colony algorithm is introduced and the simulation results are also presented. The results show the proposed method can enhance SHWFS centroid accuracy very well. |
| 英文摘要: | Shack-Hartmann wavefront sensor (SHWFS) is widely used in adaptive optics systems. Its centroid detecting error is one of the main error sources in adaptive optical systems. There are many factors affecting the detecting accuracy such as photon shot noise, readout noise, background level of CCD camera and number of detecting pixels. It is very effective to enhance the centroid accuracy by setting the threshold for the images of the SHWFS. But in daytime, the sky background is strong and changes very fast. The threshold cannot be chosen automatically Either. In this paper, a new method based on the morphologic filter and ant colony algorithm is proposed to improve the SHWFS centroid detecting accuracy. The principle of the morphologic filter and the ant colony algorithm is introduced and the simulation results are also presented. The results show the proposed method can enhance SHWFS centroid accuracy very well. |
| 收录类别: | Ei
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| 语种: | 英语
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| 卷号: | 7157
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| 文章类型: | 会议论文
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| 内容类型: | 会议论文
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| URI标识: | http://ir.ioe.ac.cn/handle/181551/7730
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| Appears in Collections: | 自适应光学技术研究室（八室）_会议论文
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| 2009-040.pdf（466KB） | 会议论文 | -- | 限制开放 | | View
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| Recommended Citation: | |
Yanyan Zhang,MEi Li,Changhui Rao. A new method based on morphologic filter and ant colony algorithm to enhance centroid detection accuracy of Shack-Hartmann wavefront sensor[C]. 见:Proceedings of SPIE. 2009.
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