Buch, Englisch, 106 Seiten, Paperback, Format (B × H): 187 mm x 235 mm
Detection of the Optic Nerve Head
Buch, Englisch, 106 Seiten, Paperback, Format (B × H): 187 mm x 235 mm
Reihe: Synthesis Lectures on Biomedical Engineering
ISBN: 978-1-60845-631-4
Verlag: Morgan & Claypool Publishers
This book presents an introduction to diagnostic imaging of the retina and an overview of image processing techniques for ophthalmology. In particular, digital image processing algorithms and pattern analysis techniques for the detection of the ONH are described. In fundus images, the ONH usually appears as a bright region, white or yellow in color, and is indicated as the convergent area of the network of blood vessels. Use of the geometrical and intensity characteristics of the ONH, as well as the property that the ONH represents the location of entrance of the blood vessels and the optic nerve into the retina, is demonstrated in developing the methods.
The image processing techniques described in the book include morphological filters for preprocessing fundus images, filters for edge detection, the Hough transform for the detection of lines and circles, Gabor filters to detect the blood vessels, and phase portrait analysis for the detection of convergent or node-like patterns. Illustrations of application of the methods to fundus images from two publicly available databases are presented, in terms of locating the center and the boundary of the ONH. Methods for quantitative evaluation of the results of detection of the ONH using measures of overlap and free-response receiver operating characteristics are also described.
Autoren/Hrsg.
Weitere Infos & Material
- Introduction
- Computer-aided Analysis of Images of the Retina
- Detection of Geometrical Patterns
- Datasets and Experimental Setup
- Detection of the\\Optic Nerve Head\\Using the Hough Transform
- Detection of the\\Optic Nerve Head\\Using Phase Portraits
- Concluding Remarks