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The segmentation of the retinal vasculature from eye fundus images represents one of the most fundamental tasks in retinal image analysis. Over recent years, increasingly complex approaches based on sophisticated Convolutional Neural…

Image and Video Processing · Electrical Eng. & Systems 2020-09-07 Adrian Galdran , André Anjos , José Dolz , Hadi Chakor , Hervé Lombaert , Ismail Ben Ayed

U-Net has been providing state-of-the-art performance in many medical image segmentation problems. Many modifications have been proposed for U-Net, such as attention U-Net, recurrent residual convolutional U-Net (R2-UNet), and U-Net with…

Computer Vision and Pattern Recognition · Computer Science 2019-08-29 Juntang Zhuang

Segmentation of ultra-high resolution images is increasingly demanded, yet poses significant challenges for algorithm efficiency, in particular considering the (GPU) memory limits. Current approaches either downsample an ultra-high…

Computer Vision and Pattern Recognition · Computer Science 2021-03-04 Wuyang Chen , Ziyu Jiang , Zhangyang Wang , Kexin Cui , Xiaoning Qian

Accurate segmentation of the optic disc from a retinal image is vital to extracting retinal features that may be highly correlated with retinal conditions such as glaucoma. In this paper, we propose a deep-learning based approach capable of…

Image and Video Processing · Electrical Eng. & Systems 2020-10-02 Abdullah Sarhan , Ali Al-KhazÁly , Adam Gorner , Andrew Swift , Jon Rokne , Reda Alhajj , Andrew Crichton

Ultra-widefield (UWF) imaging is a promising modality that captures a larger retinal field of view compared to traditional fundus photography. Previous studies showed that deep learning (DL) models are effective for detecting retinal…

Image and Video Processing · Electrical Eng. & Systems 2022-03-14 Justin Engelmann , Alice D. McTrusty , Ian J. C. MacCormick , Emma Pead , Amos Storkey , Miguel O. Bernabeu

Diabetic Retinopathy (DR) is a serious microvascular complication of diabetes, and one of the leading causes of vision loss worldwide. Although automated detection and grading, with Deep Learning (DL), can reduce the burden on…

Image and Video Processing · Electrical Eng. & Systems 2026-04-06 Shramana Dey , Zahir Khan , T. A. PramodKumar , B. Uma Shankar , Ashis K. Dhara , Ramachandran Rajalakshmi , Rajiv Raman , Sushmita Mitra

Ocular pathology detection from fundus images presents an important challenge on health care. In fact, each pathology has different severity stages that may be deduced by verifying the existence of specific lesions. Each lesion is…

Image and Video Processing · Electrical Eng. & Systems 2019-05-08 Yaroub Elloumi , Mohamed Akil , Henda Boudegga

Observing retinal fundus images by an ophthalmologist is a major diagnosis approach for glaucoma. However, it is still difficult to distinguish the features of the lesion solely through manual observations, especially, in glaucoma early…

Image and Video Processing · Electrical Eng. & Systems 2020-01-08 Peng Liu , Ruogu Fang

Diabetes is a globally prevalent disease that can cause visible microvascular complications such as diabetic retinopathy and macular edema in the human eye retina, the images of which are today used for manual disease screening. This…

Image and Video Processing · Electrical Eng. & Systems 2019-04-19 Jaakko Sahlsten , Joel Jaskari , Jyri Kivinen , Lauri Turunen , Esa Jaanio , Kustaa Hietala , Kimmo Kaski

Diabetic retinopathy is one of the most threatening complications of diabetes that leads to permanent blindness if left untreated. One of the essential challenges is early detection, which is very important for treatment success.…

Machine Learning · Computer Science 2020-03-06 Borys Tymchenko , Philip Marchenko , Dmitry Spodarets

Age-related macular degeneration (AMD) is one of the leading causes of irreversible vision impairment in people over the age of 60. This research focuses on semantic segmentation for AMD lesion detection in RGB fundus images, a non-invasive…

Computer Vision and Pattern Recognition · Computer Science 2025-10-31 Valentyna Starodub , Mantas Lukoševičius

Diabetic Retinopathy (DR) is a leading cause of vision loss globally. Yet despite its prevalence, the majority of affected people lack access to the specialized ophthalmologists and equipment required for assessing their condition. This can…

Computer Vision and Pattern Recognition · Computer Science 2021-10-22 Alexandros Papadopoulos , Fotis Topouzis , Anastasios Delopoulos

Medical image segmentation is of great significance in analysis of illness. The use of deep neural networks in medical image segmentation can help doctors extract regions of interest from complex medical images, thereby improving diagnostic…

Image and Video Processing · Electrical Eng. & Systems 2026-04-01 Zhuoyi Fang , Kexuan Shi , Jiajia Liu , Qiang Han

Retinal vessel segmentation methods based on standard overlap losses tend to miss thin peripheral vessels because these structures occupy very few pixels and have low contrast against the background. We propose HMS-VesselNet, a hierarchical…

Image and Video Processing · Electrical Eng. & Systems 2026-03-24 Amarnath R

Red-lesions, microaneurysms (MAs) and hemorrhages (HMs), are the early signs of diabetic retinopathy (DR). The automatic detection of MAs and HMs on retinal fundus images is a challenging task. Most of the existing methods detect either…

Image and Video Processing · Electrical Eng. & Systems 2025-05-02 Norah Asiri , Muhammad Hussain , Fadwa Al Adel

The segmentation of retinal vessels is of significance for doctors to diagnose the fundus diseases. However, existing methods have various problems in the segmentation of the retinal vessels, such as insufficient segmentation of retinal…

Computer Vision and Pattern Recognition · Computer Science 2018-05-14 Yun Jiang , Ning Tan

We propose an automatic diabetic retinopathy (DR) analysis algorithm based on two-stages deep convolutional neural networks (DCNN). Compared to existing DCNN-based DR detection methods, the proposed algorithm have the following advantages:…

Computer Vision and Pattern Recognition · Computer Science 2017-05-03 Yehui Yang , Tao Li , Wensi Li , Haishan Wu , Wei Fan , Wensheng Zhang

Retinal fundus images are widely used for the clinical screening and diagnosis of eye diseases. However, fundus images captured by operators with various levels of experience have a large variation in quality. Low-quality fundus images…

Image and Video Processing · Electrical Eng. & Systems 2020-12-10 Ziyi Shen , Huazhu Fu , Jianbing Shen , Ling Shao

Medical image segmentation is vital to the area of medical imaging because it enables professionals to more accurately examine and understand the information offered by different imaging modalities. The technique of splitting a medical…

Image and Video Processing · Electrical Eng. & Systems 2024-09-01 Aitik Gupta , Joydip Dhar

In this paper, an optic disc and cup segmentation method is proposed using U-Net followed by a multi-scale feature matching network. The proposed method targets task 2 of the REFUGE challenge 2018. In order to solve the segmentation problem…

Computer Vision and Pattern Recognition · Computer Science 2018-07-31 Vivek Kumar Singh , Hatem A. Rashwan , Adel Saleh , Farhan Akram , Md Mostafa Kamal Sarker , Nidhi Pandey , Saddam Abdulwahab