Image vignetting reduction via a maximization of fuzzy entropy

In many computer vision applications, vignetting is an undesirable effect which must be removed in a pre-processing step. Recently, an algorithm for image vignetting correction has been presented by means of a minimization of log-intensity entropy. This method relies on an increase of the entropy of...

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Bibliographic Details
Main Authors: Lopez-Fuentes, Laura, Massanet, Sebastia, Gonzalez-Hidalgo, Manuel
Format: Conference Proceeding
Language:English
Subjects:
Adaptive optics
Computer vision
Entropy
Fuzzy sets
Lenses
Minimization
Optical imaging
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Summary:In many computer vision applications, vignetting is an undesirable effect which must be removed in a pre-processing step. Recently, an algorithm for image vignetting correction has been presented by means of a minimization of log-intensity entropy. This method relies on an increase of the entropy of the image when it is affected with vignetting. In this paper, we propose a novel algorithm to reduce image vignetting via a maximization of the fuzzy entropy of the image. Fuzzy entropy quantifies the fuzziness degree of a fuzzy set and its value is also modified by the presence of vignetting. The experimental results show that this novel algorithm outperforms in most cases the algorithm based on the minimization of log-intensity entropy both from the qualitative and the quantitative point of view.
ISSN:1558-4739
DOI:10.1109/FUZZ-IEEE.2017.8015706