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Retinal vessel segmentation, as a principal nonintrusive diagnose method for ophthalmology diseases or diabetics, suffers from data scarcity due to requiring pixel-wise labels. In this paper, we proposed a convenient patch-based two-stage…

Image and Video Processing · Electrical Eng. & Systems 2019-06-21 Chengzhi Shi , Jihong Liu , Dali Chen

Segmentation, a useful/powerful technique in pattern recognition, is the process of identifying object outlines within images. There are a number of efficient algorithms for segmentation in Euclidean space that depend on the variational…

Computer Vision and Pattern Recognition · Computer Science 2019-11-12 Xiaohao Cai , Christopher G. R. Wallis , Jennifer Y. H. Chan , Jason D. McEwen

Medical image segmentation is pivotal in healthcare, enhancing diagnostic accuracy, informing treatment strategies, and tracking disease progression. This process allows clinicians to extract critical information from visual data, enabling…

Image and Video Processing · Electrical Eng. & Systems 2024-10-31 Ovais Iqbal Shah , Danish Raza Rizvi , Aqib Nazir Mir

Automated vascular segmentation on optical coherence tomography angiography (OCTA) is important for the quantitative analyses of retinal microvasculature in neuroretinal and systemic diseases. Despite recent improvements, artifacts continue…

Image and Video Processing · Electrical Eng. & Systems 2021-04-22 Yih-Cherng Lee , Ling Yeung

Analyzing the morphological attributes of blood vessels plays a critical role in the computer-aided diagnosis of many cardiovascular and ophthalmologic diseases. Although being extensively studied, segmentation of blood vessels,…

Image and Video Processing · Electrical Eng. & Systems 2020-10-12 Yicheng Wu , Chengwei Pan , Shuqi Wang , Ming Zhang , Yong Xia , Yizhou Yu

Retinal vessel segmentation is a crucial step in diagnosing and screening various diseases, including diabetes, ophthalmologic diseases, and cardiovascular diseases. In this paper, we propose an effective and efficient method for vessel…

Image and Video Processing · Electrical Eng. & Systems 2020-09-24 Zhun Fan , Jiajie Mo , Benzhang Qiu , Wenji Li , Guijie Zhu , Chong Li , Jianye Hu , Yibiao Rong , Xinjian Chen

The precise detection of blood vessels in retinal images is crucial to the early diagnosis of the retinal vascular diseases, e.g., diabetic, hypertensive and solar retinopathies. Existing works often fail in predicting the abnormal areas,…

Image and Video Processing · Electrical Eng. & Systems 2021-09-23 Jun Wang , Yang Zhao , Linglong Qian , Xiaohan Yu , Yongsheng Gao

In this study, a supervised retina blood vessel segmentation process was performed on the green channel of the RGB image using artificial neural network (ANN). The green channel is preferred because the retinal vessel structures can be…

Image and Video Processing · Electrical Eng. & Systems 2020-01-17 Esra Kaya , İsmail Sarıtaş , Ilker Ali Ozkan

The accurate segmentation of retinal blood vessels plays a crucial role in the early diagnosis and treatment of various ophthalmic diseases. Designing a network model for this task requires meticulous tuning and extensive experimentation to…

Image and Video Processing · Electrical Eng. & Systems 2024-11-19 Tingting Wu , Ruyi Min , Peixuan Song , Hengtao Guo , Tieyong Zeng , Feng-Lei Fan

Accurate segmentation of the blood vessels of the retina is an important step in clinical diagnosis of ophthalmic diseases. Many deep learning frameworks have come up for retinal blood vessels segmentation tasks. However, the complex…

Image and Video Processing · Electrical Eng. & Systems 2022-04-08 Ting Zhang , Jun Li , Yi Zhao , Nan Chen , Han Zhou , Hongtao Xu , Zihao Guan , Changcai Yang , Lanyan Xue , Riqing Chen , Lifang Wei

Accurate segmentation is crucial for clinical applications, but existing models often assume fixed, high-resolution inputs and degrade significantly when faced with lower-resolution data in real-world scenarios. To address this limitation,…

Image and Video Processing · Electrical Eng. & Systems 2025-07-22 Simon Winther Albertsen , Hjalte Svaneborg Bjørnstrup , Mostafa Mehdipour Ghazi

Automatic segmentation of retinal vessels in fundus images plays an important role in the diagnosis of some diseases such as diabetes and hypertension. In this paper, we propose Deformable U-Net (DUNet), which exploits the retinal vessels'…

Computer Vision and Pattern Recognition · Computer Science 2019-05-21 Qiangguo Jin , Zhaopeng Meng , Tuan D. Pham , Qi Chen , Leyi Wei , Ran Su

Vessel segmentation of retinal images is a key diagnostic capability in ophthalmology. This problem faces several challenges including low contrast, variable vessel size and thickness, and presence of interfering pathology such as…

Image and Video Processing · Electrical Eng. & Systems 2020-02-19 Venkateswararao Cherukuri , Vijay Kumar BG , Raja Bala , Vishal Monga

Topological and geometrical analysis of retinal blood vessel is a cost-effective way for early detection of many common diseases. Meanwhile, automated vessel segmentation and vascular tree analysis are still lacking in terms of…

Image and Video Processing · Electrical Eng. & Systems 2021-11-24 Xingzheng Lyu , Li Cheng , Sanyuan Zhang

Segmentation of retinal vessels from retinal fundus images is the key step in the automatic retinal image analysis. In this paper, we propose a new unsupervised automatic method to segment the retinal vessels from retinal fundus images.…

Computer Vision and Pattern Recognition · Computer Science 2017-07-21 Renoh Johnson Chalakkal , Waleed Abdulla

We identify and address three research gaps in the field of vessel segmentation for funduscopy. The first focuses on the task of inference on high-resolution fundus images for which only a limited set of ground-truth data is publicly…

Computer Vision and Pattern Recognition · Computer Science 2020-03-18 Tim Laibacher , André Anjos

Retinal vessel segmentation is an essential step for fundus image analysis. With the recent advances of deep learning technologies, many convolutional neural networks have been applied in this field, including the successful U-Net. In this…

Image and Video Processing · Electrical Eng. & Systems 2019-11-11 Weilin Fu , Katharina Breininger , Zhaoya Pan , Andreas Maier

We identify two major limitations in the existing studies on retinal vessel segmentation: (1) Most existing works are restricted to one modality, i.e., the Color Fundus (CF). However, multi-modality retinal images are used every day in the…

Image and Video Processing · Electrical Eng. & Systems 2026-01-01 Bo Wen , Anna Heinke , Akshay Agnihotri , Dirk-Uwe Bartsch , William Freeman , Truong Nguyen , Cheolhong An

Semantic segmentation of surgical instruments plays a crucial role in robot-assisted surgery. However, accurate segmentation of cataract surgical instruments is still a challenge due to specular reflection and class imbalance issues. In…

Computer Vision and Pattern Recognition · Computer Science 2019-10-03 Zhen-Liang Ni , Gui-Bin Bian , Xiao-Hu Zhou , Zeng-Guang Hou , Xiao-Liang Xie , Chen Wang , Yan-Jie Zhou , Rui-Qi Li , Zhen Li

Retinal vessel segmentation is a vital step for the diagnosis of many early eye-related diseases. In this work, we propose a new deep learning model, namely Channel Attention Residual U-Net (CAR-UNet), to accurately segment retinal vascular…

Image and Video Processing · Electrical Eng. & Systems 2020-10-22 Changlu Guo , Márton Szemenyei , Yangtao Hu , Wenle Wang , Wei Zhou , Yugen Yi