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Pretrained vision-language models such as CLIP exhibit strong zero-shot generalization but remain sensitive to distribution shifts. Test-time adaptation adapts models during inference without access to source data or target labels, offering…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Wenxuan Bao , Yanjun Zhao , Xiyuan Yang , Jingrui He

Recent Alzheimer's disease (AD) patient studies have focused on retinal analysis, as the retina is the only part of the central nervous system which can be imaged non-invasively by optical methods. However as this is a relatively new…

Strain-engineering of materials encompasses significant elastic deformation and leads to breaking of the lattice symmetry and as a consequence to the emergence of optical anisotropy. However, the capability to image and map local strain…

Optics · Physics 2024-07-26 Joan Sendra , Fabian Haake , Micha Calvo , Henning Galinski , Ralph Spolenak

Automated diagnosis of Alzheimer Disease(AD) from brain imaging, such as magnetic resonance imaging (MRI), has become increasingly important and has attracted the community to contribute many deep learning methods. However, many of these…

Image and Video Processing · Electrical Eng. & Systems 2024-03-01 Yifeng Wang , Ke Chen , Haohan Wang

Adaptive optics (AO) corrected ood imaging of the retina is a popular technique for studying the retinal structure and function in the living eye. However, the raw retinal images are usually of poor contrast and the interpretation of such…

Optimization and Control · Mathematics 2020-12-30 Xiaotong Chen , James L. Herring , James G. Nagy , Yuanzhe Xi , Bo Yu

Retinal optical coherence tomography (OCT) images are the biomarkers for neurodegenerative diseases, which are rising in prevalence. Early detection of Alzheimer's disease using retinal OCT is a primary challenging task. This work utilizes…

Image and Video Processing · Electrical Eng. & Systems 2025-08-19 Siva Manohar Reddy Kesu , Neelam Sinha , Hariharan Ramasangu , Thomas Gregor Issac

Purpose: This study explores the feasibility of using generative machine learning (ML) to translate Optical Coherence Tomography (OCT) images into Optical Coherence Tomography Angiography (OCTA) images, potentially bypassing the need for…

Computer Vision and Pattern Recognition · Computer Science 2024-04-26 Rashadul Hasan Badhon , Atalie Carina Thompson , Jennifer I. Lim , Theodore Leng , Minhaj Nur Alam

Optical Coherence Tomography Angiography (OCTA) is a promising tool for detecting Alzheimer's disease (AD) by imaging the retinal microvasculature. Ophthalmologists commonly use region-based analysis, such as the ETDRS grid, to study OCTA…

Image and Video Processing · Electrical Eng. & Systems 2023-11-13 Shouyue Liu , Jinkui Hao , Yanwu Xu , Huazhu Fu , Xinyu Guo , Jiang Liu , Yalin Zheng , Yonghuai Liu , Jiong Zhang , Yitian Zhao

Cardiac amyloidosis (CA) is a rare cardiomyopathy, with typical abnormalities in clinical measurements from echocardiograms such as reduced global longitudinal strain of the myocardium. An alternative approach for detecting CA is via neural…

Computer Vision and Pattern Recognition · Computer Science 2025-09-25 Alexander Thorley , Agis Chartsias , Jordan Strom , Roberto Lang , Jeremy Slivnick , Jamie O'Driscoll , Rajan Sharma , Dipak Kotecha , Jinming Duan , Alberto Gomez

Developing a reliable vision system is a fundamental challenge for robotic technologies (e.g., indoor service robots and outdoor autonomous robots) which can ensure reliable navigation even in challenging environments such as adverse…

Computer Vision and Pattern Recognition · Computer Science 2024-07-10 Elena Camuffo , Umberto Michieli , Simone Milani , Jijoong Moon , Mete Ozay

Eye diseases are common in older Americans and can lead to decreased vision and blindness. Recent advancements in imaging technologies allow clinicians to capture high-quality images of the retinal blood vessels via Optical Coherence…

Computer Vision and Pattern Recognition · Computer Science 2024-07-23 Jacob Thrasher , Annahita Amireskandari , Prashnna Gyawali

Optical coherence tomography (OCT) captures cross-sectional data and is used for the screening, monitoring, and treatment planning of retinal diseases. Technological developments to increase the speed of acquisition often results in systems…

Image and Video Processing · Electrical Eng. & Systems 2023-01-03 Timothy T. Yu , Da Ma , Jayden Cole , Myeong Jin Ju , Mirza F. Beg , Marinko V. Sarunic

The diversity of retinal imaging devices poses a significant challenge: domain shift, which leads to performance degradation when applying the deep learning models trained on one domain to new testing domains. In this paper, we propose a…

Image and Video Processing · Electrical Eng. & Systems 2021-10-07 Peng Liu , Charlie T. Tran , Bin Kong , Ruogu Fang

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

Optical coherence tomography (OCT) is a non-invasive, high-resolution imaging technology that provides cross-sectional images of tissues. Dense acquisition of A-scans along the fast axis is required to obtain high digital resolution images.…

Image and Video Processing · Electrical Eng. & Systems 2024-06-04 Zezhao Guo , Zhanfang Zhao

Unsupervised domain adaptation for object detection is a challenging problem with many real-world applications. Unfortunately, it has received much less attention than supervised object detection. Models that try to address this task tend…

Computer Vision and Pattern Recognition · Computer Science 2021-06-11 Hongsong Wang , Shengcai Liao , Ling Shao

Alterations in retinal layer thickness, measurable using Optical Coherence Tomography (OCT), have been associated with neurodegenerative diseases such as Alzheimer's disease (AD). While previous studies have mainly focused on segmented…

Computer Vision and Pattern Recognition · Computer Science 2025-11-10 Yasemin Turkan , F. Boray Tek , M. Serdar Nazlı , Öykü Eren

In a scanning transmission electron microscope (STEM), producing a high-resolution image generally requires an electron beam focused to the smallest point possible. However, the magnetic lenses used to focus the beam are unavoidably…

Optical coherence tomography (OCT) has proven to be a powerful technique for studying tissue morphology in ophthalmology, cardiology, and endomicroscopy. Its performance is limited by the fundamental trade-off between the imaging…

Optics · Physics 2008-02-27 Keisuke Goda , Daniel R. Solli , Bahram Jalali

Optical coherence tomography angiography (OCTA) is a non-invasive imaging modality that can acquire high-resolution volumes of the retinal vasculature and aid the diagnosis of ocular, neurological and cardiac diseases. Segmenting the…