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Conference Paper Vignetting distortion correction method for high quality digital imaging
Cited 44 time in scopus Share share facebook twitter linkedin kakaostory
Authors
Wonpil Yu, Yunkoo Chung, Jung Soh
Issue Date
2004-08
Citation
International Conference on Pattern Recognition (ICPR) 2004, pp.1-4
Language
English
Type
Conference Paper
DOI
https://dx.doi.org/10.1109/ICPR.2004.1334617
Abstract
Vignetting refers to a position dependent loss of light in the output of an optical system causing gradual fading out of an image near the periphery. In this paper, we propose a method for correcting vignetting distortion by introducing nonlinear model fitting of a proposed vignetting distortion function. The proposed method aims for embedded digital imaging applications as well as conventional image enhancement. We could obtain a light intensity profile distribution without precisely controlled illumination and considerably reduce memory requirement for vignetting correction compared with traditional lookup table (LUT) methods. We show the effectiveness of the proposed method by presenting experimental results obtained from commercial digital cameras.
KSP Keywords
Correction method, Digital camera, Digital imaging(CCD camera), Image enhancement, Intensity profile, Look up tables(LUTs), Nonlinear model, distortion correction, distortion function, imaging applications, light intensity