Design of video auto focusing based on image processing

Bo Meng; Ming Zhu; Chang-jin Cai

doi:10.1117/12.668633

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20 January 2006 Design of video auto focusing based on image processing

Bo Meng, Ming Zhu, Chang-jin Cai

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Proceedings Volume 6027, ICO20: Optical Information Processing; 602750 (2006) https://doi.org/10.1117/12.668633
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China

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.

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Bo Meng, Ming Zhu, and Chang-jin Cai "Design of video auto focusing based on image processing", Proc. SPIE 6027, ICO20: Optical Information Processing, 602750 (20 January 2006); https://doi.org/10.1117/12.668633

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