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Proceedings Paper

Minimum image entropy technology applied to the real-time autofocusing system of space optical remote sensors
Author(s): Linghua Guo; Jianquan Li; Yi Li; Sen Wang; Aimin Jiang; Xiaoqing Ding; Ronggang Peng; Hu Juan
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Paper 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.

Paper Details

Date Published: 25 April 2008
PDF: 7 pages
Proc. SPIE 7000, Optical and Digital Image Processing, 700011 (25 April 2008); doi: 10.1117/12.780916
Show Author Affiliations
Linghua Guo, China Academy of Space Technology (China)
Jianquan Li, China Academy of Space Technology (China)
Yi Li, China Univ. of Petroleum (China)
Sen Wang, National Astronomical Observatories (China)
Aimin Jiang, National Astronomical Observatories (China)
Xiaoqing Ding, Tsinghua Univ. (China)
Ronggang Peng, Jilin Petroleum Group Corp. (China)
Hu Juan, Jilin Petroleum Group Corp. (China)

Published in SPIE Proceedings Vol. 7000:
Optical and Digital Image Processing
Peter Schelkens; Touradj Ebrahimi; Gabriel Cristóbal; Frédéric Truchetet, Editor(s)

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