Digital Image Processing For Ophthalmology

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Digital Image Processing for Ophthalmology

Faraz Oloumi,Rangaraj Rangayyan,Anna Ells
Digital Image Processing for Ophthalmology Book PDF

Author : Faraz Oloumi,Rangaraj Rangayyan,Anna Ells
Publisher : Springer Nature
Page : 151 pages
File Size : 51,9 Mb
Release : 2022-06-01
Category : Technology & Engineering
ISBN : 9783031016608

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Digital Image Processing for Ophthalmology by Faraz Oloumi,Rangaraj Rangayyan,Anna Ells Pdf

The monitoring of the effects of retinopathy on the visual system can be assisted by analyzing the vascular architecture of the retina. This book presents methods based on Gabor filters to detect blood vessels in fundus images of the retina. Forty images of the retina from the Digital Retinal Images for Vessel Extraction (DRIVE) database were used to evaluate the performance of the methods. The results demonstrate high efficiency in the detection of blood vessels with an area under the receiver operating characteristic curve of 0.96. Monitoring the openness of the major temporal arcade (MTA) could facilitate improved diagnosis and optimized treatment of retinopathy. This book presents methods for the detection and modeling of the MTA, including the generalized Hough transform to detect parabolic forms. Results obtained with 40 images of the DRIVE database, compared with hand-drawn traces of the MTA, indicate a mean distance to the closest point of about 0.24mm. This book illustrates applications of the methods mentioned above for the analysis of the effects of proliferative diabetic retinopathy and retinopathy of prematurity on retinal vascular architecture.

Digital Image Processing for Ophthalmology

Xiaolu Zhu,Rangaraj Rangayyan,Anna L. Ells
Digital Image Processing for Ophthalmology Book PDF

Author : Xiaolu Zhu,Rangaraj Rangayyan,Anna L. Ells
Publisher : Springer Nature
Page : 95 pages
File Size : 55,8 Mb
Release : 2022-05-31
Category : Technology & Engineering
ISBN : 9783031016493

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Digital Image Processing for Ophthalmology by Xiaolu Zhu,Rangaraj Rangayyan,Anna L. Ells Pdf

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 features 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 the\\Optic Nerve Head\\Using the Hough Transform / Detection of the\\Optic Nerve Head\\Using Phase Portraits / Concluding Remarks

Image Analysis and Modeling in Ophthalmology

Eddie Y. K. Ng,U. Rajendra Acharya,Jasjit S. Suri,Aurelio Campilho
Image Analysis and Modeling in Ophthalmology Book PDF

Author : Eddie Y. K. Ng,U. Rajendra Acharya,Jasjit S. Suri,Aurelio Campilho
Publisher : CRC Press
Page : 412 pages
File Size : 47,6 Mb
Release : 2014-02-11
Category : Technology & Engineering
ISBN : 9781466559301

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Image Analysis and Modeling in Ophthalmology by Eddie Y. K. Ng,U. Rajendra Acharya,Jasjit S. Suri,Aurelio Campilho Pdf

Digital fundus images can effectively diagnose glaucoma and diabetes retinopathy, while infrared imaging can show changes in the vascular tissues. Likening the eye to the conventional camera, Image Analysis and Modeling in Ophthalmology explores the application of advanced image processing in ocular imaging. This book considers how images can be used to effectively diagnose ophthalmologic problems. It introduces multi-modality image processing algorithms as a means for analyzing subtle changes in the eye. It details eye imaging, textural imaging, and modeling, and highlights specific imaging and modeling techniques. The book covers the detection of diabetes retinopathy, glaucoma, anterior segment eye abnormalities, instruments on detection of glaucoma, and development of human eye models using computational fluid dynamics and heat transfer principles to predict inner temperatures of the eye from its surface temperature. It presents an ultrasound biomicroscopy (UBM) system for anterior chamber angle imaging and proposes an automated anterior segment eye disease classification system that can be used for early disease diagnosis and treatment management. It focuses on the segmentation of the blood vessels in high-resolution retinal images and describes the integration of the image processing methodologies in a web-based framework aimed at retinal analysis. The authors introduce the A-Levelset algorithm, explore the ARGALI system to calculate the cup-to-disc ratio (CDR), and describe the Singapore Eye Vessel Assessment (SIVA) system, a holistic tool which brings together various technologies from image processing and artificial intelligence to construct vascular models from retinal images. The text furnishes the working principles of mechanical and optical instruments for the diagnosis and healthcare administration of glaucoma, reviews state-of-the-art CDR calculation detail, and discusses the existing methods and databases. Image Analysis and Modeling in Ophthalmology includes the latest research development in the field of eye modeling and the multi-modality image processing techniques in ocular imaging. It addresses the differences, performance measures, advantages and disadvantages of various approaches, and provides extensive reviews on related fields.

Digital Image Processing for Ophthalmology

Faraz Oloumi,Rangaraj M. Rangayyan,Anna L. Ells
Digital Image Processing for Ophthalmology Book PDF

Author : Faraz Oloumi,Rangaraj M. Rangayyan,Anna L. Ells
Publisher : Morgan & Claypool Publishers
Page : 177 pages
File Size : 41,8 Mb
Release : 2014-05-01
Category : Technology & Engineering
ISBN : 9781627054317

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Digital Image Processing for Ophthalmology by Faraz Oloumi,Rangaraj M. Rangayyan,Anna L. Ells Pdf

The monitoring of the effects of retinopathy on the visual system can be assisted by analyzing the vascular architecture of the retina. This book presents methods based on Gabor filters to detect blood vessels in fundus images of the retina. Forty images of the retina from the Digital Retinal Images for Vessel Extraction (DRIVE) database were used to evaluate the performance of the methods. The results demonstrate high efficiency in the detection of blood vessels with an area under the receiver operating characteristic curve of 0.96. Monitoring the openness of the major temporal arcade (MTA) could facilitate improved diagnosis and optimized treatment of retinopathy. This book presents methods for the detection and modeling of the MTA, including the generalized Hough transform to detect parabolic forms. Results obtained with 40 images of the DRIVE database, compared with hand-drawn traces of the MTA, indicate a mean distance to the closest point of about 0.24mm. This book illustrates applications of the methods mentioned above for the analysis of the effects of proliferative diabetic retinopathy and retinopathy of prematurity on retinal vascular architecture.

Ophthalmological Imaging and Applications

E. Y. K. Ng,U. Rajendra Acharya,Rangaraj M. Rangayyan,Jasjit S. Suri
Ophthalmological Imaging and Applications Book PDF

Author : E. Y. K. Ng,U. Rajendra Acharya,Rangaraj M. Rangayyan,Jasjit S. Suri
Publisher : CRC Press
Page : 532 pages
File Size : 43,8 Mb
Release : 2014-05-05
Category : Technology & Engineering
ISBN : 9781466559134

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Ophthalmological Imaging and Applications by E. Y. K. Ng,U. Rajendra Acharya,Rangaraj M. Rangayyan,Jasjit S. Suri Pdf

Edited by and featuring contributions from world-class researchers, Ophthalmological Imaging and Applications offers a unified work of the latest human eye imaging and modeling techniques that have been proposed and applied to the diagnosis of ophthalmologic problems, including inflammation, cataracts, diabetic retinopathy, and glaucoma. With a focus on theory, basic principles, and results derived from research, the book: Explores various morphological, textural, higher-order spectral, and wavelet transformation techniques used to extract salient features from images of the human eye Examines 2D and 3D finite element and boundary element models of the human eye developed to simulate thermal steady-state conditions Addresses the difficult task of benchmarking the validity of human eye imaging techniques and computer-simulated results with experimental measurements Intended to be a companion to Image Analysis and Modeling in Ophthalmology, this volume covers several aspects of multimodal ophthalmological imaging and applications, presenting information in an accessible manner to appeal to a wide audience of students, researchers, and practitioners. Ophthalmological Imaging and Applications considers promising simulations that pave the way for new possibilities in computational methods for eye health care.

Ophthalmic Medical Image Analysis

Bhavna Antony,Hao Chen,Huihui Fang,Huazhu Fu,Cecilia S. Lee,Yalin Zheng
Ophthalmic Medical Image Analysis Book PDF

Author : Bhavna Antony,Hao Chen,Huihui Fang,Huazhu Fu,Cecilia S. Lee,Yalin Zheng
Publisher : Springer Nature
Page : 174 pages
File Size : 52,9 Mb
Release : 2023-09-15
Category : Computers
ISBN : 9783031440137

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Ophthalmic Medical Image Analysis by Bhavna Antony,Hao Chen,Huihui Fang,Huazhu Fu,Cecilia S. Lee,Yalin Zheng Pdf

This book constitutes the refereed proceedings of the 10th International Workshop on Ophthalmic Medical Image Analysis, OMIA 2023, held in conjunction with the 26th International Conference on Medical Imaging and Computer-Assisted Intervention, MICCAI 2023, in Vancouver, Canada, in October 2023. The 16 papers presented at OMIA 2023 were carefully reviewed and selected from 27 submissions. The papers cover various topics in the field of ophthalmic medical image analysis and challenges in terms of reliability and validation, number and type of conditions considered, multi-modal analysis (e.g., fundus, optical coherence tomography, scanning laser ophthalmoscopy), novel imaging technologies, and the effective transfer of advanced computer vision and machine learning technologies.

Image Processing in Optical Coherence Tomography Using Matlab

Robert Koprowski,Zygmunt Wróbel
Image Processing in Optical Coherence Tomography Using Matlab Book PDF

Author : Robert Koprowski,Zygmunt Wróbel
Publisher : Robert Koprowski
Page : 176 pages
File Size : 43,8 Mb
Release : 2011
Category : Image processing
ISBN : 9788362462025

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Image Processing in Optical Coherence Tomography Using Matlab by Robert Koprowski,Zygmunt Wróbel Pdf

This book covers the results of the creation of methods for ophthalmologists support in OCT images automated analysis. These methods, like the application developed on their basis, are used during routine examinations carried out in hospital. The monograph comprises proposals of new and also of known algorithms, modified by authors, for image analysis and processing, presented on the basis of example of Matlab environment with Image Processing tools. The results are not only obtained fully automatically, but also repeatable, providing doctors with quantitative information on the degree of pathology occurring in the patient. In this case the anterior and posterior eye segment is analysed, e.g. the measurement of the filtration angle or individual layers thickness. To introduce the Readers to subtleties related to the implementation of selected fragments of algorithms, the notation of some of them in the Matlab environment has been given. The presented source code is shown only in the form of example of implementable selected algorithm. In no way we impose here the method of resolution on the Reader and we only provide the confirmation of a possibility of its practical implementation.

Image Analysis and Modeling in Ophthalmology

Eddie Y. K. Ng,U. Rajendra Acharya,Jasjit S. Suri,Aurelio Campilho
Image Analysis and Modeling in Ophthalmology Book PDF

Author : Eddie Y. K. Ng,U. Rajendra Acharya,Jasjit S. Suri,Aurelio Campilho
Publisher : CRC Press
Page : 402 pages
File Size : 50,7 Mb
Release : 2014-02-11
Category : Medical
ISBN : 9781466559387

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Image Analysis and Modeling in Ophthalmology by Eddie Y. K. Ng,U. Rajendra Acharya,Jasjit S. Suri,Aurelio Campilho Pdf

Digital fundus images can effectively diagnose glaucoma and diabetes retinopathy, while infrared imaging can show changes in the vascular tissues. Likening the eye to the conventional camera, Image Analysis and Modeling in Ophthalmology explores the application of advanced image processing in ocular imaging. This book considers how images can be us

Image Modeling of the Human Eye

Rajendra Acharya U,Y. K. Eddie Ng,Jasjit S. Suri
Image Modeling of the Human Eye Book PDF

Author : Rajendra Acharya U,Y. K. Eddie Ng,Jasjit S. Suri
Publisher : Artech House
Page : 378 pages
File Size : 43,7 Mb
Release : 2008
Category : Computers
ISBN : 9781596932098

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Image Modeling of the Human Eye by Rajendra Acharya U,Y. K. Eddie Ng,Jasjit S. Suri Pdf

This groundbreaking resource gives you full details on state-of-the-art 2D and 3D eye imaging and modeling techniques that are paving the way to breakthrough clinical applications in eye health. ItOCOs the first book to explore in depth a new generation of computational methods that combine image processing, simulation, and statistical discrimination tools in efforts to improve early detection of cataracts, diabetic retinopathy, glaucoma, iridocyclitis, corneal haze, maculopathy, and other visual impairments and conditions."

Ophthalmic Medical Image Analysis

Bhavna Antony,Huazhu Fu,Cecilia S. Lee,Tom MacGillivray,Yanwu Xu,Yalin Zheng
Ophthalmic Medical Image Analysis Book PDF

Author : Bhavna Antony,Huazhu Fu,Cecilia S. Lee,Tom MacGillivray,Yanwu Xu,Yalin Zheng
Publisher : Springer Nature
Page : 216 pages
File Size : 55,6 Mb
Release : 2022-09-15
Category : Computers
ISBN : 9783031165252

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Ophthalmic Medical Image Analysis by Bhavna Antony,Huazhu Fu,Cecilia S. Lee,Tom MacGillivray,Yanwu Xu,Yalin Zheng Pdf

This book constitutes the refereed proceedings of the 9th International Workshop on Ophthalmic Medical Image Analysis, OMIA 2022, held in conjunction with the 25th International Conference on Medical Imaging and Computer-Assisted Intervention, MICCAI 2022, in Singapore, Singapore, in September 2022. The 20 papers presented at OMIA 2022 were carefully reviewed and selected from 33 submissions. The papers cover various topics in the field of ophthalmic medical image analysis and challenges in terms of reliability and validation, number and type of conditions considered, multi-modal analysis (e.g., fundus, optical coherence tomography, scanning laser ophthalmoscopy), novel imaging technologies, and the effective transfer of advanced computer vision and machine learning technologies.

Ophthalmic Medical Image Analysis

Huazhu Fu,Mona K. Garvin,Tom MacGillivray,Yanwu Xu,Yalin Zheng
Ophthalmic Medical Image Analysis Book PDF

Author : Huazhu Fu,Mona K. Garvin,Tom MacGillivray,Yanwu Xu,Yalin Zheng
Publisher : Springer Nature
Page : 192 pages
File Size : 55,5 Mb
Release : 2019-10-10
Category : Computers
ISBN : 9783030329563

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Ophthalmic Medical Image Analysis by Huazhu Fu,Mona K. Garvin,Tom MacGillivray,Yanwu Xu,Yalin Zheng Pdf

This book constitutes the refereed proceedings of the 6th International Workshop on Ophthalmic Medical Image Analysis, OMIA 2019, held in conjunction with the 22nd International Conference on Medical Imaging and Computer-Assisted Intervention, MICCAI 2019, in Shenzhen, China, in October 2019. The 22 full papers (out of 36 submissions) presented at OMIA 2019 were carefully reviewed and selected. The papers cover various topics in the field of ophthalmic image analysis.

Retinal Optical Coherence Tomography Image Analysis

Xinjian Chen,Fei Shi,Haoyu Chen
Retinal Optical Coherence Tomography Image Analysis Book PDF

Author : Xinjian Chen,Fei Shi,Haoyu Chen
Publisher : Springer
Page : 385 pages
File Size : 46,6 Mb
Release : 2019-07-05
Category : Science
ISBN : 9789811318252

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Retinal Optical Coherence Tomography Image Analysis by Xinjian Chen,Fei Shi,Haoyu Chen Pdf

This book introduces the latest optical coherence tomography (OCT) imaging and computerized automatic image analysis techniques, and their applications in the diagnosis and treatment of retinal diseases. Discussing the basic principles and the clinical applications of OCT imaging, OCT image preprocessing, as well as the automatic detection and quantitative analysis of retinal anatomy and pathology, it includes a wealth of clinical OCT images, and state-of-the-art research that applies novel image processing, pattern recognition and machine learning methods to real clinical data. It is a valuable resource for researchers in both medical image processing and ophthalmic imaging.

Medical Image Analysis and Informatics

Paulo Mazzoncini de Azevedo-Marques,Arianna Mencattini,Marcello Salmeri,Rangaraj M. Rangayyan
Medical Image Analysis and Informatics Book PDF

Author : Paulo Mazzoncini de Azevedo-Marques,Arianna Mencattini,Marcello Salmeri,Rangaraj M. Rangayyan
Publisher : CRC Press
Page : 600 pages
File Size : 41,8 Mb
Release : 2017-11-23
Category : Technology & Engineering
ISBN : 9781351230827

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Medical Image Analysis and Informatics by Paulo Mazzoncini de Azevedo-Marques,Arianna Mencattini,Marcello Salmeri,Rangaraj M. Rangayyan Pdf

With the development of rapidly increasing medical imaging modalities and their applications, the need for computers and computing in image generation, processing, visualization, archival, transmission, modeling, and analysis has grown substantially. Computers are being integrated into almost every medical imaging system. Medical Image Analysis and Informatics demonstrates how quantitative analysis becomes possible by the application of computational procedures to medical images. Furthermore, it shows how quantitative and objective analysis facilitated by medical image informatics, CBIR, and CAD could lead to improved diagnosis by physicians. Whereas CAD has become a part of the clinical workflow in the detection of breast cancer with mammograms, it is not yet established in other applications. CBIR is an alternative and complementary approach for image retrieval based on measures derived from images, which could also facilitate CAD. This book shows how digital image processing techniques can assist in quantitative analysis of medical images, how pattern recognition and classification techniques can facilitate CAD, and how CAD systems can assist in achieving efficient diagnosis, in designing optimal treatment protocols, in analyzing the effects of or response to treatment, and in clinical management of various conditions. The book affirms that medical imaging, medical image analysis, medical image informatics, CBIR, and CAD are proven as well as essential techniques for health care.

Digital Eye Care and Teleophthalmology

Kanagasingam Yogesan,Leonard Goldschmidt,Jorge Cuadros,Giselle Ricur
Digital Eye Care and Teleophthalmology Book PDF

Author : Kanagasingam Yogesan,Leonard Goldschmidt,Jorge Cuadros,Giselle Ricur
Publisher : Springer Nature
Page : 524 pages
File Size : 43,9 Mb
Release : 2023-06-19
Category : Medical
ISBN : 9783031240522

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Digital Eye Care and Teleophthalmology by Kanagasingam Yogesan,Leonard Goldschmidt,Jorge Cuadros,Giselle Ricur Pdf

This book describes digital ophthalmology and telemedicine applications for both front of the eye and retina. It includes technical issues, digital imaging, what clinical parameters to use, which technologies are suitable, and collective experiences of practitioners in different parts of the world practicing a wide range of digital eye care delivery. The main purpose of this book is to provide adequate information to clinicians and other health professionals who are involved in eye care delivery to assess how digital health in ophthalmology might be applied to their working practice, how digital screenings are performed, and to learn about virtual image reading. Many of the chapters are also helpful to health service managers, imaging specialists, and information technology staff. Digital Eye Care and Teleophthalmology: A Practical Guide to Applications examines digital eye care to provide state of art ophthalmic services. It is an essential resource for professionals involved in eye care seeking to develop or improve their digital applications in daily practice.

Automated Image Detection of Retinal Pathology

Herbert Jelinek,Michael J. Cree
Automated Image Detection of Retinal Pathology Book PDF

Author : Herbert Jelinek,Michael J. Cree
Publisher : CRC Press
Page : 384 pages
File Size : 41,5 Mb
Release : 2009-10-09
Category : Medical
ISBN : 9781420037005

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Automated Image Detection of Retinal Pathology by Herbert Jelinek,Michael J. Cree Pdf

Discusses the Effect of Automated Assessment Programs on Health Care Provision Diabetes is approaching pandemic numbers, and as an associated complication, diabetic retinopathy is also on the rise. Much about the computer-based diagnosis of this intricate illness has been discovered and proven effective in research labs. But, unfortunately, many of these advances have subsequently failed during transition from the lab to the clinic. So what is the best way to diagnose and treat retinopathy? Automated Image Detection of Retinal Pathology discusses the epidemiology of the disease, proper screening protocols, algorithm development, image processing, and feature analysis applied to the retina. Conveys the Need for Widely Implemented Risk-Reduction Programs Offering an array of informative examples, this book analyzes the use of automated computer techniques, such as pattern recognition, in analyzing retinal images and detecting diabetic retinopathy and its progression as well as other retinal-based diseases. It also addresses the benefits and challenges of automated health care in the field of ophthalmology. The book then details the increasing practice of telemedicine screening and other advanced applications including arteriolar-venous ratio, which has been shown to be an early indicator of cardiovascular, diabetes, and cerebrovascular risk. Although tremendous advances have been made in this complex field, there are still many questions that remain unanswered. This book is a valuable resource for researchers looking to take retinal pathology to that next level of discovery as well as for clinicians and primary health care professionals that aim to utilize automated diagnostics as part of their health care program.