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This paper addresses the fundamental computer vision challenge of robust circle detection and fitting in degraded imaging conditions. We present Combinatorial Convolution-based Circle Fitting for Blurry Images (3C-FBI), an algorithm that…

Computer Vision and Pattern Recognition · Computer Science 2025-07-17 Esteban Román Catafau , Torbjörn E. M. Nordling

Image colorization achieves more and more realistic results with the increasing computation power of recent deep learning techniques. It becomes more difficult to identify the fake colorized images by human eyes. In this work, we propose a…

Computer Vision and Pattern Recognition · Computer Science 2019-02-19 Weize Quan , Dong-Ming Yan , Kai Wang , Xiaopeng Zhang , Denis Pellerin

Image harmonization task aims at harmonizing different composite foreground regions according to specific background image. Previous methods would rather focus on improving the reconstruction ability of the generator by some internal…

Computer Vision and Pattern Recognition · Computer Science 2022-12-14 Jingtang Liang , Chi-Man Pun

Recent advancements in ophthalmology foundation models such as RetFound have demonstrated remarkable diagnostic capabilities but require massive datasets for effective pre-training, creating significant barriers for development and…

Image and Video Processing · Electrical Eng. & Systems 2025-03-25 Qingshan Hou , Meng Wang , Peng Cao , Zou Ke , Xiaoli Liu , Huazhu Fu , Osmar R. Zaiane

High myopia significantly increases the risk of irreversible vision loss. Traditional perimetry-based visual field (VF) assessment provides systematic quantification of visual loss but it is subjective and time-consuming. Consequently,…

Computer Vision and Pattern Recognition · Computer Science 2024-07-18 Zipei Yan , Zhile Liang , Zhengji Liu , Shuai Wang , Rachel Ka-Man Chun , Jizhou Li , Chea-su Kee , Dong Liang

The growing burden of myopia and retinal diseases necessitates more accessible and efficient eye screening solutions. This study presents a compact, dual-function optical device that integrates fundus photography and refractive error…

Image and Video Processing · Electrical Eng. & Systems 2025-04-29 Boyuan Peng , Jiaju Chen , Yiwei Zhang , Cuiyi Peng , Junyang Li , Jiaming Deng , Peiwu Qin

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

Real-world non-mydriatic retinal fundus photography is prone to artifacts, imperfections and low-quality when certain ocular or systemic co-morbidities exist. Artifacts may result in inaccuracy or ambiguity in clinical diagnoses. In this…

Image and Video Processing · Electrical Eng. & Systems 2023-02-07 Wenhui Zhu , Peijie Qiu , Mohammad Farazi , Keshav Nandakumar , Oana M. Dumitrascu , Yalin Wang

In this work, we have presented a way to increase the contrast of an image. Our target is to find a transformation that will be image specific. We have used a fuzzy system as our transformation function. To tune the system according to an…

Computer Vision and Pattern Recognition · Computer Science 2023-01-31 Mohimenul Kabir , Jaiaid Mobin , Ahmad Hassanat , M. Sohel Rahman

Retinal vessel segmentation is a fundamental step in screening, diagnosis, and treatment of various cardiovascular and ophthalmic diseases. Robustness is one of the most critical requirements for practical utilization, since the test images…

Image and Video Processing · Electrical Eng. & Systems 2021-09-29 Xu Sun , Huihui Fang , Yehui Yang , Dongwei Zhu , Lei Wang , Junwei Liu , Yanwu Xu

Choroidal nevi are common benign pigmented lesions in the eye, with a small risk of transforming into melanoma. Early detection is critical to improving survival rates, but misdiagnosis or delayed diagnosis can lead to poor outcomes.…

Computer Vision and Pattern Recognition · Computer Science 2026-04-16 Mohammadmahdi Eshragh , Emad A. Mohammed , Behrouz Far , Ezekiel Weis , Carol L Shields , Sandor R Ferenczy , Trafford Crump

Diabetic Retinopathy (DR) is a prominent cause of blindness in the world. The early treatment of DR can be conducted from detection of microaneurysms (MAs) which appears as reddish spots in retinal images. An automated microaneurysm…

Computer Vision and Pattern Recognition · Computer Science 2018-07-10 Noushin Eftekheri , Mojtaba Masoudi , Hamidreza Pourreza , Kamaledin Ghiasi Shirazi , Ehsan Saeedi

Fundus images are very useful in identifying various ophthalmic disorders. However, due to the presence of artifacts, the visibility of the retina is severely affected. This may result in misdiagnosis of the disorder which may lead to more…

Image and Video Processing · Electrical Eng. & Systems 2021-12-28 Sai Koushik S S , K. G. Srinivasa

Purpose: To provide a diverse, high-quality dataset of color fundus images (CFIs) with detailed artery-vein (A/V) segmentation annotations, supporting the development and evaluation of machine learning algorithms for vascular analysis in…

Image and Video Processing · Electrical Eng. & Systems 2026-02-19 Jose Vargas Quiros , Bart Liefers , Karin van Garderen , Jeroen Vermeulen , Eyened Reading Center , Caroline Klaver

As an affordable and convenient eye scan, fundus photography holds the potential for preventing vision impairment, especially in resource-limited regions. However, fundus image degradation is common under intricate imaging environments,…

Image and Video Processing · Electrical Eng. & Systems 2025-01-22 Heng Li , Haojin Li , Mingyang Ou , Xiangyang Yu , Xiaoqing Zhang , Ke Niu , Huazhu Fu , Jiang Liu

The adoption of neural network models in medical imaging has been constrained by strict privacy regulations, limited data availability, high acquisition costs, and demographic biases. Deep generative models offer a promising solution by…

Image and Video Processing · Electrical Eng. & Systems 2025-06-16 Zuzanna Skorniewska , Bartlomiej W. Papiez

Automatically detecting or segmenting cracks in images can help in reducing the cost of maintenance or operations. Detecting, measuring and quantifying cracks for distress analysis in challenging background scenarios is a difficult task as…

Computer Vision and Pattern Recognition · Computer Science 2024-01-01 Ram Krishna Pandey , Akshit Achara

The Segment Anything Model (SAM) has gained popularity as a versatile image segmentation method, thanks to its strong generalization capabilities across various domains. However, when applied to optic disc (OD) and optic cup (OC)…

Computer Vision and Pattern Recognition · Computer Science 2025-02-11 Jinchen Yu , Yongwei Nie , Fei Qi , Wenxiong Liao , Hongmin Cai

Identifying lesions in fundus images is an important milestone toward an automated and interpretable diagnosis of retinal diseases. To support research in this direction, multiple datasets have been released, proposing groundtruth maps for…

Computer Vision and Pattern Recognition · Computer Science 2024-05-15 Clément Playout , Farida Cheriet

The morphology of blood vessels in retinal fundus images is an important indicator of diseases like glaucoma, hypertension and diabetic retinopathy. The accuracy of retinal blood vessels segmentation affects the quality of retinal image…

Computer Vision and Pattern Recognition · Computer Science 2018-03-02 A. M. R. R. Bandara , P. W. G. R. M. P. B. Giragama