Volume 31 Issue 02
Feb.  2005
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Sun Minglei, Zong Guanghua, Yu Zhiwei, et al. Automatic focusing system of micro-vision based on image analysis[J]. Journal of Beijing University of Aeronautics and Astronautics, 2005, 31(02): 192-196. (in Chinese)
Citation: Sun Minglei, Zong Guanghua, Yu Zhiwei, et al. Automatic focusing system of micro-vision based on image analysis[J]. Journal of Beijing University of Aeronautics and Astronautics, 2005, 31(02): 192-196. (in Chinese)

Automatic focusing system of micro-vision based on image analysis

  • Received Date: 20 Jun 2004
  • Publish Date: 28 Feb 2005
  • An automatic focusing system of micro-vision for micro alignment assembly was developed. The system was based on spatial domain analysis. First-order differential operator in y direction was choosed as focusing evaluation function to realize autofocus quickly and accurately. Processing the image in a choosed focusing window was presented to optimize focusing effect. A new focusing algorithm was put forward, which is different from hill climbing searching algorithm(HCSA). The key factor of the algorithm is establishing the relation between defocus values and focusing evaluation. Cubic spline interpolation was adopted to establish focusing relation function to realize the algorithm effectively. It proves the system can realize autofocus accurately and quickly.

     

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  • [1] Firestone L. Comparison of autofocus methods for automated microscopy . Cytometry,1991,12(3):195~206 [2] Yeo T. Autofocus for tissue microscopy [J]. Image and Vision Computing,1993,11(10):629~639 [3] 任四刚,李见为,谢利利. 基于灰度差分法的自动调焦技术[J] 光电工程,2003,30(2):53~55 Ren Sigang,Li Jianwei,Xie Lili. Automatic focusing technique based on gray scale difference method[J]. Opto-Electronic Engineering,2003,30(2):53~55(in Chinese) [4] 李文恩,陈海清,李 俊,等. 红外导引头成像光斑图像处理及自动聚焦[J]. 量子电子学报, 2003,20(3):364~369 Li Wenen,Chen Haiqing,Li Jun,et al. Image manipulation and autofocus of the infrared seeker[J]. Journal of Quantum Electronics, 2003,20(3):364~369(in Chinese) [5] 白立芬,徐毓娴,于 水,等. 基于图像处理的显微镜自动调焦方法研究[J]. 仪器仪表学报, 1999,20(6):612~614 Bai Lifen,Xu Yuxian,Yu Shui,et al. Study on the microscope autofocus method based on image processing[J]. Chinese Journal of Scientific Instrument, 1999,20(6):612~614(in Chinese) [6] 李贺桥,张以谟,常容青,等. 图像采集自动生物显微镜系统自动调焦的研究[J].光学学报,1995,15(8):1106~1110 Li Heqiao,Zhang Yimo,Chang Rongqing,et al. Study on automatic focusing of image collecting automatic biological microscope system[J]. Acta Optica Sinica,1995,15(8):1106~1110(in Chinese) [7] 李庆祥,王东生,李玉和. 现代精密仪器设计[M].北京:清华大学出版社,2004.395~397 Li Qingxiang, Wang Dongsheng, Li Yuhe. Design of modern precision instruments .Beijing:Press of Tsinghua University,2004.395~397(in Chinese)
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