| 夏克-哈特曼波前传感器光斑质心探测方法比较与分析 |
| |
| 引用本文： | 程利群,;景文博,;王晓曼.夏克-哈特曼波前传感器光斑质心探测方法比较与分析[J].长春理工大学学报,2014(3):23-26. |
| |
| 作者姓名： | 程利群 ;景文博 ;王晓曼 |
| |
| 作者单位： | [1]长春理工大学理学院,长春130022; [2]长春理工大学光电工程学院,长春130022; [3]长春理工大学电子信息工程学院,长春130022 |
| |
| 基金项目： | 吉林省科技发展计划重大项目（20106012） |
| |
| 摘 要： | 夏克-哈特曼（简称哈特曼）波前传感器被广泛应用于光学测量、激光大气传输、医学等领域。由于哈特曼波前传感器是根据光斑质心的偏移量来重构畸变波前，因此，哈特曼阵列光斑质心的探测精度直接影响了波前重构的精度。本文从哈特曼波前传感器的测量原理着手，对几种阈值法质心探测技术及窗口法质心探测技术进行了比较和分析，得到了质心计算误差均在0.1pixel左右，可在实际不同应用时选择不同的质心探测方法。
|
| 关 键 词： | 哈特曼传感器 质心探测 阵列光斑 阈值法 窗口法 |
Comparison and Analysis of Shack-Hartmann Wave-front Sensor Spot Centroid Detection Methods |
| |
| Affiliation: | CHENG Liqun, JING Wenbo, WANG Xiaoman (1.School of Science, Changchun University of Science and Technology, Changchun 130022; 2.School of Photoelectronic Engineering, Changchun University of Science and Technology, Changchun130022 ; 3. School of Electronic and Information Engineering, Changchun University of Science and Technology, Changchun130022) |
| |
| Abstract: | Shack-Hartmann wave-front sensor is widely used in optical measurements, laser atmospheric transmission and medical fields. Because the reconstructed wave-front aberrations is based on deviation of spot centroid,the accura-cy of reconstructed wave-front is directly dependent on the accuracy of detecting centroid. The theory of Hartmann wave-front sensor was discussed and the techniques of threshold method and window method detecting centroid were emphatically compared and analyzed in this paper. The centroid detection error of both of the two methods is approxi-mately 0.1pixel. The centroid detection method can be selected according to different applications. |
| |
| Keywords: | Hartmann wave-front detector detecting centroid array spot threshold method window method |
| 本文献已被 维普 等数据库收录！ |
|
