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Proceedings Paper

Design of video auto focusing based on image processing
Author(s): Bo Meng; Ming Zhu; Chang-jin Cai
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Paper Abstract

In order to realize the auto focusing technique based on digital image processing, a video image processing system is designed by using high-performance digital signal processor TMS320VC5509 as the core, field programmable gate array FPGA for preprocessing of image. At the same time, it is proposed to use vector norm sum of image gray gradient as evaluation functions of digital image. It has the characteristics of good unbiasedness, powerful unimodality, etc., and can be applied to evaluation of defocusing. The hardware composition of the theory behind the auto focusing system, and the application of the evaluation function are discussed in details.

Paper Details

Date Published: 20 January 2006
PDF: 9 pages
Proc. SPIE 6027, ICO20: Optical Information Processing, 602750 (20 January 2006); doi: 10.1117/12.668633
Show Author Affiliations
Bo Meng, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Chinese Academy of Sciences (China)
Ming Zhu, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Chang-jin Cai, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Chinese Academy of Sciences (China)


Published in SPIE Proceedings Vol. 6027:
ICO20: Optical Information Processing
Yunlong Sheng; Songlin Zhuang; Yimo Zhang, Editor(s)

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