Retrospective shading correction algorithm based on signal envelope estimation
Reyes-Aldasoro, C. C. (2009). Retrospective shading correction algorithm based on signal envelope estimation. Electronics Letters, 45(9), pp. 454-456. doi: 10.1049/el.2009.0320
Abstract
An additive retrospective non-parametric algorithm for the correction of the inhomogeneous intensity background of images, commonly known as shading, is presented. The algorithm assumed that an original unbiased image was corrupted by slowly-varying shading that could be estimated from the signal envelope in a process analogous to amplitude modulation detection. Unlike other filtering algorithms, the algorithm did not require pre-processing, parameter setting, user interaction, computationally intensive optimisation algorithms nor a restriction in size of the objects of interest relative to the scale of background variations. The algorithm provided satisfactory results for artificial and microscopical images.
Publication Type: | Article |
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Additional Information: | This paper is a postprint of a paper submitted to and accepted for publication in Electronic Letters and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library. |
Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
Departments: | School of Science & Technology > Engineering School of Science & Technology > Computer Science > giCentre |
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