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Proceedings Paper

Estimation of circularly symmetric point spread function for digital auto-focusing
Author(s): Younguk Park; Jinhee Lee; Jaehwan Jeon; Joonki Paik
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Paper Abstract

In this paper, we present a circularly symmetric point spread function (PSF) estimation technique for a fully digital autofocusing system. The proposed algorithm provides realistic, unsupervised PSF estimation by establishing the relationship between the one-dimensional ideal step response and the corresponding two-dimensional circularly symmetric PSF. Main advantage of the proposed algorithm is the accurate estimation of the PSF combining by using interpolation, feasible step response estimation. The proposed estimation method will serve as (i) a fundamental procedure in designing an in-house extended depth-of-field (EDoF) system, (ii) a detecting method for improperly manufactured imaging sensors in the production line, and (iii) a PSF estimation method for general image restoration algorithms.

Paper Details

Date Published: 8 February 2010
PDF: 8 pages
Proc. SPIE 7532, Image Processing: Algorithms and Systems VIII, 75320S (8 February 2010);
Show Author Affiliations
Younguk Park, Chung-Ang Univ. (Korea, Republic of)
Jinhee Lee, Chung-Ang Univ. (Korea, Republic of)
Jaehwan Jeon, Chung-Ang Univ. (Korea, Republic of)
Joonki Paik, Chung-Ang Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 7532:
Image Processing: Algorithms and Systems VIII
Jaakko T. Astola; Karen O. Egiazarian, Editor(s)

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