Subpixel imaging of area-array CCD based on micro-zooming

Author

Dan, Mei ; Cao, Juliang ; Tuo, Zhouhui

Author_Institution

Sch. of Electron. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha

fYear

2008

fDate

20-23 June 2008

Firstpage

91

Lastpage

94

Abstract

The spatial domain imaging model of micro-zooming is established. According to the model, the relationship between observed images and ideal high resolution image is given as a set of large, sparse and inconsistent linear equations. And the high resolution image can be reconstructed by solving the equations. The procedure of micro-zooming is equivalent to change the positions and areas of CCD sensor elements, which are related to the magnification of optical system and the locations of the sensor elements respectively. So micro-zooming can be considered as a special case of the micro- translation imaging, which can realize subpixel imaging by translating the CCD sensor in subpixel level during imaging. Ultimately, the experiment concerned on subpixel imaging of area- array CCD is given. Experiment results show that, by micro-zooming, the resolution of imaging system can be enhanced markedly.

Keywords

CCD image sensors; image reconstruction; image registration; image resolution; CCD sensor element; area-array CCD; image reconstruction; image registration; image resolution; linear equation; microtranslation imaging; microzooming; optical system magnification; spatial domain imaging model; subpixel imaging; Charge coupled devices; Charge-coupled image sensors; Equations; High-resolution imaging; Image reconstruction; Image resolution; Optical imaging; Optical sensors; Sensor systems; Spatial resolution; Micro-zooming; image reconstruction; image registration; subpixel imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Information and Automation, 2008. ICIA 2008. International Conference on

Conference_Location

Changsha

Print_ISBN

978-1-4244-2183-1

Electronic_ISBN

978-1-4244-2184-8

Type

conf

DOI

10.1109/ICINFA.2008.4607974

Filename

4607974