Synthesis Lectures on Biomedical Engineering Digital Image Processing for Ophthalmology - Xiaolu Zhu Rangaraj Rangayyan Anna L Ells Kartoniert (TB)

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Bücher EAN 9783031005213

Synthesis Lectures on Biomedical Engineering Digital Image Processing for Ophthalmology - Xiaolu Zhu Rangaraj Rangayyan Anna L Ells Kartoniert (TB)

Name: Synthesis Lectures on Biomedical Engineering Digital Image Processing for Ophthalmology - Xiaolu Zhu Rangaraj Rangayyan Anna L Ells Kartoniert (TB)
Brand: Xiaolu Zhu
SKU: 9783031005213
Price: 29.95 EUR
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Hersteller: Xiaolu Zhu · MPN: M0303100521X

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Hersteller: Xiaolu Zhu
EAN: 9783031005213
Hersteller-Artikelnr.: M0303100521X
Kategorie: Bücher
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Produktbeschreibung

Fundus images of the retina are color images of the eye taken by specially designed digital cameras. Ophthalmologists rely on fundus images to diagnose various diseases that affect the eye such as diabetic retinopathy and retinopathy of prematurity. A crucial preliminary step in the analysis of retinal images is the identification and localization of important anatomical structures such as the optic nerve head (ONH) the macula and the major vascular arcades. Identification of the ONH is an important initial step in the detection and analysis of the anatomical structures and pathological fe atures in the retina. Different types of retinal pathology may be detected and analyzed via the application of appropriately designed techniques of digital image processing and pattern recognition. Computer-aided analysis of retinal images has the potential to facilitate quantitative and objective analysis of retinal lesions and abnormalities. Accurate identification and localization of retinal features and lesions could contribute to improved diagnosis treatment and management of retinopathy. 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. Table of Contents: Introduction Computer-aided Analysis of Images of the Retina Detection of Geometrical Patterns Datasets and Experimental Setup Detection of theOptic Nerve HeadUsing the Hough Transform Detection of theOptic Nerve HeadUsing Phase Portraits Concluding Remarks

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