| ชื่อเรื่อง | : | Adaptive centroid-finding algorithm for freeform surface measurements |
| นักวิจัย | : | Guo, Wenjiang , Zhao, Liping , Tong, Chin Shi , Chen, I-Ming , Joshi, Sunil Chandrakant |
| คำค้น | : | - |
| หน่วยงาน | : | Nanyang Technological University, Singapore |
| ผู้ร่วมงาน | : | - |
| ปีพิมพ์ | : | 2556 |
| อ้างอิง | : | Guo, W., Zhao, L., Tong, C. S., Chen, I.-M., & Joshi, S. C. (2013). Adaptive centroid-finding algorithm for freeform surface measurements. Applied Optics, 52(10), D75-D83. , http://hdl.handle.net/10220/10100 , http://dx.doi.org/10.1364/AO.52.000D75 |
| ที่มา | : | - |
| ความเชี่ยวชาญ | : | - |
| ความสัมพันธ์ | : | Applied optics |
| ขอบเขตของเนื้อหา | : | - |
| บทคัดย่อ/คำอธิบาย | : | Wavefront sensing systems measure the slope or curvature of a surface by calculating the centroid displacement of two focal spot images. Accurately finding the centroid of each focal spot determines the measurement results. This paper studied several widely used centroid-finding techniques and observed that thresholding is the most critical factor affecting the centroid-finding accuracy. Since the focal spot image of a freeform surface usually suffers from various types of image degradation, it is difficult and sometimes impossible to set a best threshold value for the whole image. We propose an adaptive centroid-finding algorithm to tackle this problem and have experimentally proven its effectiveness in measuring freeform surfaces. |
| บรรณานุกรม | : |
Guo, Wenjiang , Zhao, Liping , Tong, Chin Shi , Chen, I-Ming , Joshi, Sunil Chandrakant . (2556). Adaptive centroid-finding algorithm for freeform surface measurements.
กรุงเทพมหานคร : Nanyang Technological University, Singapore. Guo, Wenjiang , Zhao, Liping , Tong, Chin Shi , Chen, I-Ming , Joshi, Sunil Chandrakant . 2556. "Adaptive centroid-finding algorithm for freeform surface measurements".
กรุงเทพมหานคร : Nanyang Technological University, Singapore. Guo, Wenjiang , Zhao, Liping , Tong, Chin Shi , Chen, I-Ming , Joshi, Sunil Chandrakant . "Adaptive centroid-finding algorithm for freeform surface measurements."
กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2556. Print. Guo, Wenjiang , Zhao, Liping , Tong, Chin Shi , Chen, I-Ming , Joshi, Sunil Chandrakant . Adaptive centroid-finding algorithm for freeform surface measurements. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2556.
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