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An electrocardiogram (ECG) feature extraction system has been developed and evaluated using Virtex-6 FPGA kit which belongs to Xilinx Ltd. In time domain, Pan-Tompkins algorithm is used for QRS detection and it is followed by a feature…

Signal Processing · Electrical Eng. & Systems 2018-02-12 Naveen Sai Madiraju , Naresh Kurella , Rama Valapudasu

Atrial fibrillation (AF) is the most prevalent cardiac arrhythmia worldwide, with 2% of the population affected. It is associated with an increased risk of strokes, heart failure and other heart-related complications. Monitoring at-risk…

Machine Learning · Computer Science 2021-11-24 Sideshwar J B , Sachin Krishan T , Vishal Nagarajan , Shanthakumar S , Vineeth Vijayaraghavan

Test-time adaptation (TTA) has emerged as a viable solution to adapt pre-trained models to domain shifts using unlabeled test data. However, TTA faces challenges of adaptation failures due to its reliance on blind adaptation to unknown test…

Machine Learning · Computer Science 2024-04-03 Taeckyung Lee , Sorn Chottananurak , Taesik Gong , Sung-Ju Lee

Electroencephalography (EEG) serves as a reliable and objective signal for emotion recognition in affective brain-computer interfaces, offering unique advantages through its high temporal resolution and ability to capture authentic…

Computer Vision and Pattern Recognition · Computer Science 2025-08-20 Yueyang Li , Shengyu Gong , Weiming Zeng , Nizhuan Wang , Wai Ting Siok

Deep-learning models have been successful in biomedical image segmentation. To generalize for real-world deployment, test-time augmentation (TTA) methods are often used to transform the test image into different versions that are hopefully…

Computer Vision and Pattern Recognition · Computer Science 2024-02-29 Kangxian Xie , Siyu Huang , Sebastian Andres Cajas Ordonez , Hanspeter Pfister , Donglai Wei

We present a convolutional-recurrent neural network architecture with long short-term memory for real-time processing and classification of digital sensor data. The network implicitly performs typical signal processing tasks such as…

We present Point-TTA, a novel test-time adaptation framework for point cloud registration (PCR) that improves the generalization and the performance of registration models. While learning-based approaches have achieved impressive progress,…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Ahmed Hatem , Yiming Qian , Yang Wang

We propose Test-Time Augmentation (TTA) as an effective technique for addressing combinatorial optimization problems, including the Traveling Salesperson Problem. In general, deep learning models possessing the property of invariance, where…

Machine Learning · Computer Science 2024-05-09 Ryo Ishiyama , Takahiro Shirakawa , Seiichi Uchida , Shinnosuke Matsuo

Test-Time Augmentation (TTA) is a very powerful heuristic that takes advantage of data augmentation during testing to produce averaged output. Despite the experimental effectiveness of TTA, there is insufficient discussion of its…

Machine Learning · Computer Science 2024-02-13 Masanari Kimura

Efficient brain tumor diagnosis is crucial for early treatment; however, it is challenging because of lesion variability and image complexity. We evaluated convolutional neural networks (CNNs) in a federated learning (FL) setting, comparing…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Thamara Leandra de Deus Melo , Rodrigo Moreira , Larissa Ferreira Rodrigues Moreira , André Ricardo Backes

Deep learning techniques depend on large datasets whose annotation is time-consuming. To reduce annotation burden, the self-training (ST) and active-learning (AL) methods have been developed as well as methods that combine them in an…

Computer Vision and Pattern Recognition · Computer Science 2023-08-22 Bella Specktor-Fadida , Anna Levchakov , Dana Schonberger , Liat Ben-Sira , Dafna Ben-Bashat , Leo Joskowicz

Stress analysis and assessment of affective states of mind using ECG as a physiological signal is a burning research topic in biomedical signal processing. However, existing literature provides only binary assessment of stress, while…

Computer Vision and Pattern Recognition · Computer Science 2020-08-14 Zeeshan Ahmad , Naimul Khan

Atrial fibrillation (AF) is the most common cardiac arrhythmia and associated with a high risk for serious conditions like stroke. The use of wearable devices embedded with automatic and timely AF assessment from electrocardiograms (ECGs)…

Signal Processing · Electrical Eng. & Systems 2023-09-12 Leonie Basso , Zhao Ren , Wolfgang Nejdl

Computer vision models normally witness degraded performance when deployed in real-world scenarios, due to unexpected changes in inputs that were not accounted for during training. Data augmentation is commonly used to address this issue,…

Computer Vision and Pattern Recognition · Computer Science 2025-05-27 Puru Vaish , Shunxin Wang , Nicola Strisciuglio

The ability to scene understanding in adverse visual conditions, e.g., nighttime, has sparked active research for RGB-Thermal (RGB-T) semantic segmentation. However, it is essentially hampered by two critical problems: 1) the day-night gap…

Computer Vision and Pattern Recognition · Computer Science 2023-12-01 Yexin Liu , Weiming Zhang , Guoyang Zhao , Jinjing Zhu , Athanasios Vasilakos , Lin Wang

Atrial fibrillation (AF) is a common cardiac arrhythmia characterized by rapid and irregular contractions of the atria. It significantly elevates the risk of strokes due to slowed blood flow in the atria, especially in the left atrial…

Machine Learning · Computer Science 2024-01-19 Tian Xie

Temporal modeling is crucial for various video learning tasks. Most recent approaches employ either factorized (2D+1D) or joint (3D) spatial-temporal operations to extract temporal contexts from the input frames. While the former is more…

Computer Vision and Pattern Recognition · Computer Science 2023-01-03 Yizhou Zhao , Zhenyang Li , Xun Guo , Yan Lu

Atrial fibrillation is a commonly encountered clinical arrhythmia associated with stroke and increased mortality. Since professional medical knowledge is required for annotation, exploiting a large corpus of ECGs to develop accurate…

Quantitative Methods · Quantitative Biology 2024-10-25 Xiangqian Zhu , Mengnan Shi , Xuexin Yu , Chang Liu , Xiaocong Lian , Jintao Fei , Jiangying Luo , Xin Jin , Ping Zhang , Xiangyang Ji

Atrial fibrillation (AF) is characterized by irregular electrical impulses originating in the atria, which can lead to severe complications and even death. Due to the intermittent nature of the AF, early and timely monitoring of AF is…

Sound · Computer Science 2024-10-29 Xuanyu Liu , Jiao Li , Haoxian Liu , Zongqi Yang , Yi Huang , Jin Zhang

Atrial fibrillation (AF) is the most prevalent arrhythmia and is associated with a five-fold increase in stroke risk. Many individuals with AF go undetected. These individuals are often asymptomatic. There are ongoing debates on whether…

Signal Processing · Electrical Eng. & Systems 2020-10-19 Armand Chocron , Roi Efraim , Franck Mandel , Michael Rueschman , Niclas Palmius , Thomas Penzel , Meyer Elbaz , Joachim A. Behar