Minimum image entropy technology applied to the real-time autofocusing system of space optical remote sensors

Linghua Guo; Jianquan Li; Yi Li; Sen Wang; Aimin Jiang; Xiaoqing Ding; Ronggang Peng; Hu Juan

doi:10.1117/12.780916

25 April 2008 Minimum image entropy technology applied to the real-time autofocusing system of space optical remote sensors

Linghua Guo, Jianquan Li, Yi Li, Sen Wang, Aimin Jiang, Xiaoqing Ding, Ronggang Peng, Hu Juan

Author Affiliations +

Proceedings Volume 7000, Optical and Digital Image Processing; 700011 (2008) https://doi.org/10.1117/12.780916
Event: SPIE Photonics Europe, 2008, Strasbourg, France

Abstract

For space remote sensors with high resolution, large caliber, and long focal length, in-orbit automatic focusing technique is a significant application technology. Minimum image entropy (MIE) technology applied to real-time autofocusing system of space optical remote sensor possesses creativity and engineering significance. MIE's theoretical analysis, algorithm's computer simulation, and "Experimental Optical System" experiment have successfully validated MIE's validity as the criterion for optical remote sensor's auto-focusing. Related data indicate that for a diffraction-limited optical system with the f-ratio of F^#=39, the detecting sensitivity for checking-focus can be better than 0.1 mm, by means of MIE.

Citation Download Citation

Linghua Guo, Jianquan Li, Yi Li, Sen Wang, Aimin Jiang, Xiaoqing Ding, Ronggang Peng, and Hu Juan "Minimum image entropy technology applied to the real-time autofocusing system of space optical remote sensors", Proc. SPIE 7000, Optical and Digital Image Processing, 700011 (25 April 2008); https://doi.org/10.1117/12.780916

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