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Retinal fundus image constrast normalization using mixture of gaussians
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Bhalerao, Abhir, Anand, Sarabjot Singh and Saravanan, Ponnusamy (2008) Retinal fundus image constrast normalization using mixture of gaussians. In: 42nd Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, Oct 26-29, 2008. Published in: Asilomar Conference on Signals, Systems and Computers. Conference Record, Volume 1-4 pp. 647-650. ISBN 9781424429400. ISSN 1058-6393. doi:10.1109/ACSSC.2008.5074486
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Official URL: http://dx.doi.org/10.1109/ACSSC.2008.5074486
Abstract
We present a fast and robust method to correct contrast variation in retinal fundus imagery. The technique uses a mixture of Gaussians to model the bias of the intensity variation. Typically a three or four component mixture is sufficient to characterize the principal variation due to the spherical geometry of the retina, the high-contrast reflection off the optic nerve and the darker macula. We compare the results with a non-parametric, filtering approach on a standard diabetic retinopathy database of 89 images. Our results indicate that a parametric approach using mixture Gaussian is better at contrast stretching in lesion regions making is an effective pre-processing step for manual and computer aided diagnostic techniques.
| Item Type: | Conference Item (Paper) | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QA Mathematics R Medicine > RC Internal medicine R Medicine > RE Ophthalmology |
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| Divisions: | Faculty of Science > Computer Science | ||||
| Library of Congress Subject Headings (LCSH): | Retina -- Imaging, Ophthalmic photography, Gaussian processes | ||||
| Journal or Publication Title: | Asilomar Conference on Signals, Systems and Computers. Conference Record | ||||
| Publisher: | IEEE Computer Society | ||||
| ISBN: | 9781424429400 | ||||
| ISSN: | 1058-6393 | ||||
| Editor: | Matthews, MB | ||||
| Official Date: | 2008 | ||||
| Dates: |
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| Volume: | Volume 1-4 | ||||
| Number of Pages: | 4 | ||||
| Page Range: | pp. 647-650 | ||||
| DOI: | 10.1109/ACSSC.2008.5074486 | ||||
| Status: | Not Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Conference Paper Type: | Paper | ||||
| Title of Event: | 42nd Asilomar Conference on Signals, Systems and Computers | ||||
| Type of Event: | Conference | ||||
| Location of Event: | Pacific Grove, CA | ||||
| Date(s) of Event: | Oct 26-29, 2008 |
Data sourced from Thomson Reuters' Web of Knowledge
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