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Retrospective correction of nonuniform illumination on bi-level images

Title
Retrospective correction of nonuniform illumination on bi-level images
Authors
Lee H.Kim J.
Ewha Authors
김정태
SCOPUS Author ID
김정태scopus
Issue Date
2009
Journal Title
Optics Express
ISSN
1094-4087JCR Link
Citation
vol. 17, no. 26, pp. 23880 - 23893
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
We propose a novel method for correcting the effect of nonuniform illumination on a bi-level image. The proposed method is based on a penalized nonlinear least squares objective function that measures the binariness of an image and the roughness of illumination. Compared with conventional methods, it has the advantages of 1) not suffering from a trivial minimizer, 2) not requiring tuning of design parameters, and 3) effective optimization. In addition, it yields a unique solution since the minimization of the objective function is well-posed. In simulations and experiments, the method showed better accuracy and speed than the conventional entropy-based method. ©2009 Optical Society of America.
DOI
10.1364/OE.17.023880
Appears in Collections:
엘텍공과대학 > 전자공학과 > Journal papers
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