Nonuniform Illumination Correction Algorithm for Underwater Images Using Maximum Likelihood Estimation Method
Joint Authors
Sankpal, Sonali Sachin
Deshpande, Shraddha Sunil
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-01-27
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Scattering and absorption of light is main reason for limited visibility in water.
The suspended particles and dissolved chemical compounds in water are also responsible for scattering and absorption of light in water.
The limited visibility in water results in degradation of underwater images.
The visibility can be increased by using artificial light source in underwater imaging system.
But the artificial light illuminates the scene in a nonuniform fashion.
It produces bright spot at the center with the dark region at surroundings.
In some cases imaging system itself creates dark region in the image by producing shadow on the objects.
The problem of nonuniform illumination is neglected by the researchers in most of the image enhancement techniques of underwater images.
Also very few methods are discussed showing the results on color images.
This paper suggests a method for nonuniform illumination correction for underwater images.
The method assumes that natural underwater images are Rayleigh distributed.
This paper used maximum likelihood estimation of scale parameter to map distribution of image to Rayleigh distribution.
The method is compared with traditional methods for nonuniform illumination correction using no-reference image quality metrics like average luminance, average information entropy, normalized neighborhood function, average contrast, and comprehensive assessment function.
American Psychological Association (APA)
Sankpal, Sonali Sachin& Deshpande, Shraddha Sunil. 2016. Nonuniform Illumination Correction Algorithm for Underwater Images Using Maximum Likelihood Estimation Method. Journal of Engineering،Vol. 2016, no. 2016, pp.1-9.
https://search.emarefa.net/detail/BIM-1108372
Modern Language Association (MLA)
Sankpal, Sonali Sachin& Deshpande, Shraddha Sunil. Nonuniform Illumination Correction Algorithm for Underwater Images Using Maximum Likelihood Estimation Method. Journal of Engineering No. 2016 (2016), pp.1-9.
https://search.emarefa.net/detail/BIM-1108372
American Medical Association (AMA)
Sankpal, Sonali Sachin& Deshpande, Shraddha Sunil. Nonuniform Illumination Correction Algorithm for Underwater Images Using Maximum Likelihood Estimation Method. Journal of Engineering. 2016. Vol. 2016, no. 2016, pp.1-9.
https://search.emarefa.net/detail/BIM-1108372
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1108372