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Abstrakty
This paper presents analysis of selected noise reduction methods used in optical coherence tomography (OCT) retina images (the socalled B-scans). The tested algorithms include median and averaging filtering, anisotropic diffusion, soft wavelet thresholding, and multiframe wavelet thresholding. Precision of the denoising process was evaluated based on the results of automated retina layers segmentation, since this stage (vital for ophthalmic diagnosis) is strongly dependent on the image quality. Experiments were conducted with a set of 3D low quality scans obtained from 10 healthy patients and 10 patients with vitreoretinal pathologies. Influence of each method on the automatic image segmentation for both groups of patients is thoroughly described. Manual annotations of investigated retina layers provided by ophthalmology experts served as reference data for evaluation of the segmentation algorithm.
Rocznik
Tom
Strony
71--78
Opis fizyczny
Bibliogr. 30 poz., tab., wykr., rys.
Twórcy
autor
- Division of Signal Processing and Electronic Systems, Poznan University of Technology, 24 Jana Pawla II St., 60-965 Poznan, Poland
autor
- Division of Signal Processing and Electronic Systems, Poznan University of Technology, 24 Jana Pawla II St., 60-965 Poznan, Poland
autor
- Division of Signal Processing and Electronic Systems, Poznan University of Technology, 24 Jana Pawla II St., 60-965 Poznan, Poland
autor
- Clinical Eye Unit and Pediatric Ophthalmology Service, Heliodor Swiecicki University Hospital, Poznan University of Medical Sciences, 16/18 Grunwaldzka St., 60-780 Poznan, Poland Poland
- Department of Optometry and Biology of Visual System, Poznan University of Medical Sciences, 5D Rokietnicka St., 60-806 Poznan, Poland
autor
- Clinical Eye Unit and Pediatric Ophthalmology Service, Heliodor Swiecicki University Hospital, Poznan University of Medical Sciences, 16/18 Grunwaldzka St., 60-780 Poznan, Poland Poland
- Department of Optometry and Biology of Visual System, Poznan University of Medical Sciences, 5D Rokietnicka St., 60-806 Poznan, Poland
autor
- Clinical Eye Unit and Pediatric Ophthalmology Service, Heliodor Swiecicki University Hospital, Poznan University of Medical Sciences, 16/18 Grunwaldzka St., 60-780 Poznan, Poland
Bibliografia
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- [7] B. Karamata, K. Hassler, M. Laubscher, and T. Lasser, “Speckle statistics in optical coherence tomography”, J. Opt. Soc. Am. A 22 (4), 593-596 (2005).
- [8] M.A. Mayer, A. Borsdorf, et al., “Wavelet denoising of multiframe optical coherence tomography data”, Biomedical Optics Express 3 (3), 572-589 (2012).
- [9] A. Baghaie, R.M. D’souza, and Z. Yu, “Sparse and low rank decomposition based batch image alignment for speckle reduction of retinal OCT images”, IEEE 12th International Symposium on Biomedical Imaging, (2015).
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Uwagi
PL
Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-25c718b5-01ca-4004-9a84-a85a8f979f45