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Color fundus photography (CFP) is central to diagnosing and monitoring retinal disease, yet its acquisition variability (e.g., illumination changes) often degrades image quality, which motivates robust enhancement methods. Unpaired…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Xuanzhao Dong , Wenhui Zhu , Yujian Xiong , Xiwen Chen , Hao Wang , Xin Li , Jiajun Cheng , Zhipeng Wang , Shao Tang , Oana Dumitrascu , Yalin Wang

Contrast enhancement and noise removal are coupled problems for low-light image enhancement. The existing Retinex based methods do not take the coupling relation into consideration, resulting in under or over-smoothing of the enhanced…

Image and Video Processing · Electrical Eng. & Systems 2019-11-27 Yang Wang , Yang Cao , Zheng-Jun Zha , Jing Zhang , Zhiwei Xiong , Wei Zhang , Feng Wu

The advent of handheld fundus imaging devices has made ophthalmologic diagnosis and disease screening more accessible, efficient, and cost-effective. However, images captured from these setups often suffer from artifacts such as flash…

Computer Vision and Pattern Recognition · Computer Science 2026-04-20 Mathumetha Palani , Kavya Puthumana , Ayantika Das , Ganapathy Krishnamurthi

The difficulties of underwater image degradation due to light scattering, absorption, and fog-like particles which lead to low resolution and poor visibility are discussed in this study report. We suggest a sophisticated hybrid strategy…

Computer Vision and Pattern Recognition · Computer Science 2024-10-21 Yugandhar Reddy Gogireddy , Jithendra Reddy Gogireddy

Synthetic images are an option for augmenting limited medical imaging datasets to improve the performance of various machine learning models. A common metric for evaluating synthetic image quality is the Fr\'echet Inception Distance (FID)…

Image and Video Processing · Electrical Eng. & Systems 2025-07-30 Thomas Wallace , Ik Siong Heng , Senad Subasic , Chris Messenger

Retinal image segmentation plays an important role in automatic disease diagnosis. This task is very challenging because the complex structure and texture information are mixed in a retinal image, and distinguishing the information is…

Image and Video Processing · Electrical Eng. & Systems 2020-08-04 Shihao Zhang , Huazhu Fu , Yanwu Xu , Yanxia Liu , Mingkui Tan

For decades, advances in retinal imaging technology have enabled effective diagnosis and management of retinal disease using fundus cameras. Recently, ultra-wide-field (UWF) fundus imaging by Optos camera is gradually put into use because…

Image and Video Processing · Electrical Eng. & Systems 2020-03-25 Lie Ju , Xin Wang , Quan Zhou , Hu Zhu , Mehrtash Harandi , Paul Bonnington , Tom Drummond , Zongyuan Ge

In ophthalmological imaging, multiple imaging systems, such as color fundus, infrared, fluorescein angiography, optical coherence tomography (OCT) or OCT angiography, are often involved to make a diagnosis of retinal disease. Multi-modal…

Computer Vision and Pattern Recognition · Computer Science 2022-07-22 Aline Sindel , Bettina Hohberger , Andreas Maier , Vincent Christlein

Diabetic retinopathy is a serious ocular complication that poses a significant threat to patients' vision and overall health. Early detection and accurate grading are essential to prevent vision loss. Current automatic grading methods rely…

Computer Vision and Pattern Recognition · Computer Science 2025-04-23 Farida Mohsen , Samir Belhaouari , Zubair Shah

Diabetic retinopathy (DR) results in vision loss if not treated early. A computer-aided diagnosis (CAD) system based on retinal fundus images is an efficient and effective method for early DR diagnosis and assisting experts. A…

Computer Vision and Pattern Recognition · Computer Science 2019-08-23 Norah Asiri , Muhammad Hussain , Fadwa Al Adel , Nazih Alzaidi

Low-dose CT (LDCT) imaging is widely used to reduce radiation exposure to mitigate high exposure side effects, but often suffers from noise and artifacts that affect diagnostic accuracy. To tackle this issue, deep learning models have been…

Computer Vision and Pattern Recognition · Computer Science 2025-11-04 Taifour Yousra , Beghdadi Azeddine , Marie Luong , Zuheng Ming

Traditional fundus image analysis models focus on single-modal tasks, ignoring fundus modality complementarity, which limits their versatility. Recently, retinal foundation models have emerged, but most still remain modality-specific.…

Computer Vision and Pattern Recognition · Computer Science 2025-06-25 Yuang Yao , Ruiqi Wu , Yi Zhou , Tao Zhou

Recent studies have validated the association between cardiovascular disease (CVD) risk and retinal fundus images. Combining deep learning (DL) and portable fundus cameras will enable CVD risk estimation in various scenarios and improve…

Computer Vision and Pattern Recognition · Computer Science 2022-10-12 Zhihong Lin , Danli Shi , Donghao Zhang , Xianwen Shang , Mingguang He , Zongyuan Ge

Comparison of microvascular circulation on fundoscopic images is a non-invasive clinical indication for the diagnosis and monitoring of diseases, such as diabetes and hypertensions. The differences between intra-patient images can be…

Image and Video Processing · Electrical Eng. & Systems 2019-12-24 Siming Bayer , Xia Zhong , Weilin Fu , Nishant Ravikumar , Andreas Maier

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

Retinal images have been widely used by clinicians for early diagnosis of ocular diseases. However, the quality of retinal images is often clinically unsatisfactory due to eye lesions and imperfect imaging process. One of the most…

Image and Video Processing · Electrical Eng. & Systems 2020-08-10 Chongyi Li , Huazhu Fu , Runmin Cong , Zechao Li , Qianqian Xu

The prevalence of ocular illnesses is growing globally, presenting a substantial public health challenge. Early detection and timely intervention are crucial for averting visual impairment and enhancing patient prognosis. This research…

Computer Vision and Pattern Recognition · Computer Science 2025-01-22 Shramana Dey , Pallabi Dutta , Riddhasree Bhattacharyya , Surochita Pal , Sushmita Mitra , Rajiv Raman

Glaucoma is a disease in which the optic nerve is chronically damaged by the elevation of the intra-ocular pressure, resulting in visual field defect. Therefore, it is important to monitor and treat suspected patients before they are…

Computer Vision and Pattern Recognition · Computer Science 2018-07-05 Tae Joon Jun , Dohyeun Kim , Hoang Minh Nguyen , Daeyoung Kim , Youngsub Eom

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

Retinal template matching and registration is an important challenge in teleophthalmology with low-cost imaging devices. However, the images from such devices generally have a small field of view (FOV) and image quality degradations, making…

Image and Video Processing · Electrical Eng. & Systems 2018-11-30 Chen Gong , N. Benjamin Erichson , John P. Kelly , Laura Trutoiu , Brian T. Schowengerdt , Steven L. Brunton , Eric J. Seibel