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A generalized downlink multi-antenna non-orthogonal multiple access (NOMA) transmission framework is proposed with the novel concept of cluster-free successive interference cancellation (SIC). In contrast to conventional NOMA approaches,…

Information Theory · Computer Science 2022-08-02 Xiaoxia Xu , Yuanwei Liu , Xidong Mu , Qimei Chen , Zhiguo Ding

Optical Coherence Tomography (OCT) is essential for diagnosing conditions such as glaucoma, diabetic retinopathy, and age-related macular degeneration. Accurate retinal layer segmentation enables quantitative biomarkers critical for…

Image and Video Processing · Electrical Eng. & Systems 2025-09-10 S M Asiful Islam Saky , Ugyen Tshering

Glaucoma is one of the ophthalmic diseases that may cause blindness, for which early detection and treatment are very important. Fundus images and optical coherence tomography (OCT) images are both widely-used modalities in diagnosing…

Image and Video Processing · Electrical Eng. & Systems 2022-01-26 Zhiyuan Cai , Li Lin , Huaqing He , Xiaoying Tang

Optical coherence tomography angiography (OCTA) is a novel non-invasive imaging modality for the visualisation of microvasculature in vivo that has encountered broad adoption in retinal research. OCTA potential in the assessment of…

Image and Video Processing · Electrical Eng. & Systems 2020-06-02 Ylenia Giarratano , Eleonora Bianchi , Calum Gray , Andrew Morris , Tom MacGillivray , Baljean Dhillon , Miguel O. Bernabeu

Optical coherence tomography angiography (OCTA) is a novel non-invasive imaging technique that allows visualizations of vasculature and foveal avascular zone (FAZ) across retinal layers. Clinical researches suggest that the morphology and…

Image and Video Processing · Electrical Eng. & Systems 2021-07-14 Li Lin , Zhonghua Wang , Jiewei Wu , Yijin Huang , Junyan Lyu , Pujin Cheng , Jiong Wu , Xiaoying Tang

Advancements in medical imaging and endovascular grafting have facilitated minimally invasive treatments for aortic diseases. Accurate 3D segmentation of the aorta and its branches is crucial for interventions, as inaccurate segmentation…

Background: For acute type-A aortic dissection (ATAAD) surgery, early post-surgery assessment is crucially important for effective treatment plans, underscoring the need for a framework to identify the risk level of aortic dissection cases.…

Medical Physics · Physics 2024-06-11 J V Ramana Reddy , Toshitaka Watanabe , Taro Hayashi , Hiroshi Suito

Anterior Segment Optical Coherence Tomography (AS-OCT) is an emerging imaging technique with great potential for diagnosing anterior uveitis, a vision-threatening ocular inflammatory condition. A hallmark of this condition is the presence…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Boyu Chen , Ameenat L. Solebo , Daqian Shi , Jinge Wu , Paul Taylor

Recently, the attention mechanism has been successfully applied in convolutional neural networks (CNNs), significantly boosting the performance of many computer vision tasks. Unfortunately, few medical image recognition approaches…

Computer Vision and Pattern Recognition · Computer Science 2019-04-23 Liu Li , Mai Xu , Xiaofei Wang , Lai Jiang , Hanruo Liu

An accurate and automated tissue segmentation algorithm for retinal optical coherence tomography (OCT) images is crucial for the diagnosis of glaucoma. However, due to the presence of the optic disc, the anatomical structure of the…

Image and Video Processing · Electrical Eng. & Systems 2021-02-10 Jiaxuan Li , Peiyao Jin , Jianfeng Zhu , Haidong Zou , Xun Xu , Min Tang , Minwen Zhou , Yu Gan , Jiangnan He , Yuye Ling , Yikai Su

Fine-grained visual classification aims to recognize images belonging to multiple sub-categories within a same category. It is a challenging task due to the inherently subtle variations among highly-confused categories. Most existing…

Computer Vision and Pattern Recognition · Computer Science 2021-08-31 Tian Zhang , Dongliang Chang , Zhanyu Ma , Jun Guo

Automated optic disc (OD) and optic cup (OC) segmentation in fundus images is relevant to efficiently measure the vertical cup-to-disc ratio (vCDR), a biomarker commonly used in ophthalmology to determine the degree of glaucomatous optic…

With the advancement of powerful image processing and machine learning techniques, CAD has become ever more prevalent in all fields of medicine including ophthalmology. Since optic disc is the most important part of retinal fundus image for…

Computer Vision and Pattern Recognition · Computer Science 2020-06-01 Muhammad Naseer Bajwa , Muhammad Imran Malik , Shoaib Ahmed Siddiqui , Andreas Dengel , Faisal Shafait , Wolfgang Neumeier , Sheraz Ahmed

Accurate diagnosis of glaucoma is challenging, as early-stage changes are subtle and often lack clear structural or appearance cues. Most existing approaches rely on a single modality, such as fundus or optical coherence tomography (OCT),…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Zhiwei Wang , Yuxing Li , Meilu Zhu , Defeng He , Edmund Y. Lam

Optical Coherence Tomography Angiography (OCTA) is a non-invasive and non-contacting imaging technique providing visualization of microvasculature of retina and optic nerve head in human eyes in vivo. The adequate image quality of OCTA is…

Image and Video Processing · Electrical Eng. & Systems 2021-07-23 Yufei Wang , Yiqing Shen , Meng Yuan , Jing Xu , Bin Yang , Chi Liu , Wenjia Cai , Weijing Cheng , Wei Wang

Background/Aims: Standard Automated Perimetry (SAP) is the gold standard to monitor visual field (VF) loss in glaucoma management, but is prone to intra-subject variability. We developed and validated a deep learning (DL) regression model…

Image and Video Processing · Electrical Eng. & Systems 2021-06-08 Ruben Hemelings , Bart Elen , João Barbosa Breda , Erwin Bellon , Matthew B Blaschko , Patrick De Boever , Ingeborg Stalmans

We describe a new approach to automated Glaucoma detection in 3D Spectral Domain Optical Coherence Tomography (OCT) optic nerve scans. First, we gathered a unique and diverse multi-ethnic dataset of OCT scans consisting of glaucoma and…

Optical Coherence Tomography Angiography (OCTA) is a non-invasive imaging technique that provides high-resolution cross-sectional images of the retina, which are useful for diagnosing and monitoring various retinal diseases. However, manual…

Image and Video Processing · Electrical Eng. & Systems 2023-11-07 Can Koz , Onat Dalmaz , Mertay Dayanc

Digitization of histology images and the advent of new computational methods, like deep learning, have helped the automatic grading of colorectal adenocarcinoma cancer (CRA). Present automated CRA grading methods, however, usually use tiny…

Computer Vision and Pattern Recognition · Computer Science 2021-07-13 Neda Zamanitajeddin , Mostafa Jahanifar , Nasir Rajpoot

We propose adversarial constrained-CNN loss, a new paradigm of constrained-CNN loss methods, for weakly supervised medical image segmentation. In the new paradigm, prior knowledge is encoded and depicted by reference masks, and is further…

Computer Vision and Pattern Recognition · Computer Science 2020-05-04 Pengyi Zhang , Yunxin Zhong , Xiaoqiong Li