QUALITY ASSESSMENT OF OPTIC NERVE DISK IMAGES
نویسندگان
چکیده
منابع مشابه
Retinal Images: Optic Disk Localization and Detection
Automated localization and detection of the optic disc (OD) is an essential step in the analysis of digital diabetic retinopathy systems. Accurate localization and detection of optic disc boundary is very useful in proliferative diabetic retinopathy where fragile vessels develop in the retina. In this paper, we propose an automated system for optic disk localization and detection. Our method lo...
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On the research work leading to automatic analysis of retinal fundus images the knowledge of optic disk location is very essential, and a new method to automatically locate optic disk is proposed in this paper. The candidate regions are first determined by clustering the brightest pixels in intensity image. Principal Component Analysis (PCA) is then applied to these candidate regions. The minim...
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The methods of active contours (“snakes”) and level sets were applied to images of the retina in order to locate the outer boundary of the optic disk. A gradient-vector-flow based active contour was used as it performed well over a large range of initial conditions. Images were pre-processed to lessen the influence of blood vessels on boundary detection. Both active contours and level set metho...
متن کاملOptic disk and nerve fiber layer imaging to detect glaucoma.
PURPOSE To compare optic disk and retinal nerve fiber layer (RNFL) imaging methods to discriminate eyes with early glaucoma from normal eyes. DESIGN Retrospective, cross-sectional study. METHODS In a tertiary care academic glaucoma center, 92 eyes of 92 subjects (46 with early perimetric open-angle glaucoma and 46 controls) were studied. Diagnostic performance of optical coherence tomograph...
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The optic disk (OD) center and margin are typically requisite landmarks in establishing a frame of reference for classifying retinal and optic nerve pathology. Reliable and efficient OD localization and segmentation are important tasks in automatic eye disease screening. OD Cup is segmented using Gradient method, Adaptive Threshold and Connected Component. They utilize BBB method hang on the Ti...
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ژورنال
عنوان ژورنال: Mokslas - Lietuvos ateitis
سال: 2010
ISSN: 2029-2341,2029-2252
DOI: 10.3846/mla.2010.001