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Automatic surgical activity recognition enables more intelligent surgical devices and a more efficient workflow. Integration of such technology in new operating rooms has the potential to improve care delivery to patients and decrease…

Computer Vision and Pattern Recognition · Computer Science 2022-07-08 Ali Mottaghi , Aidean Sharghi , Serena Yeung , Omid Mohareri

Training temporal action detection in videos requires large amounts of labeled data, yet such annotation is expensive to collect. Incorporating unlabeled or weakly-labeled data to train action detection model could help reduce annotation…

Computer Vision and Pattern Recognition · Computer Science 2021-02-19 Baifeng Shi , Qi Dai , Judy Hoffman , Kate Saenko , Trevor Darrell , Huijuan Xu

Real world datasets contain incorrectly labeled instances that hamper the performance of the model and, in particular, the ability to generalize out of distribution. Also, each example might have different contribution towards learning.…

In the tasks of image aesthetic quality evaluation, it is difficult to reach both the high score area and low score area due to the normal distribution of aesthetic datasets. To reduce the error in labeling and solve the problem of normal…

Computer Vision and Pattern Recognition · Computer Science 2022-01-11 Xin Jin , Hao Lou , Huang Heng , Xiaodong Li , Shuai Cui , Xiaokun Zhang , Xiqiao Li

Unsupervised domain adaptation (UDA) aims to improve the classification performance on an unlabeled target domain by leveraging information from a fully labeled source domain. Recent approaches explore domain-invariant and…

Machine Learning · Computer Science 2021-03-26 Ni Xiao , Lei Zhang

The Dynamic Time Warping (DTW) is a popular similarity measure between time series. The DTW fails to satisfy the triangle inequality and its computation requires quadratic time. Hence, to find closest neighbors quickly, we use bounding…

Databases · Computer Science 2012-01-16 Daniel Lemire

One fascinating aspect of pre-trained Audio-Language Models (ALMs) learning is their impressive zero-shot generalization capability and test-time adaptation (TTA) methods aiming to improve domain performance without annotations. However,…

Sound · Computer Science 2024-12-24 Gongyu Chen , Haomin Zhang , Chaofan Ding , Zihao Chen , Xinhan Di

Active Learning methods create an optimized labeled training set from unlabeled data. We introduce a novel Online Active Deep Learning method for Medical Image Analysis. We extend our MedAL active learning framework to present new results…

Learning to recognize actions from only a handful of labeled videos is a challenging problem due to the scarcity of tediously collected activity labels. We approach this problem by learning a two-pathway temporal contrastive model using…

Computer Vision and Pattern Recognition · Computer Science 2021-03-30 Ankit Singh , Omprakash Chakraborty , Ashutosh Varshney , Rameswar Panda , Rogerio Feris , Kate Saenko , Abir Das

Time series averaging in dynamic time warping (DTW) spaces has been successfully applied to improve pattern recognition systems. This article proposes and analyzes subgradient methods for the problem of finding a sample mean in DTW spaces.…

Computer Vision and Pattern Recognition · Computer Science 2017-01-24 David Schultz , Brijnesh Jain

Online test-time adaptation addresses the train-test domain gap by adapting the model on unlabeled streaming test inputs before making the final prediction. However, online adaptation for 3D human pose estimation suffers from error…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Yilin Wen , Kechuan Dong , Yusuke Sugano

Medical vision foundation models remain limited in downstream tasks, particularly volumetric medical image segmentation. While fine-tuning on labeled target-domain data improves performance, existing approaches typically rely on randomly…

Image and Video Processing · Electrical Eng. & Systems 2026-05-07 Jin Yang , Daniel S. Marcus , Aristeidis Sotiras

In this paper, we propose a new method called Self-Training with Dynamic Weighting (STDW), which aims to enhance robustness in Gradual Domain Adaptation (GDA) by addressing the challenge of smooth knowledge migration from the source to the…

Machine Learning · Computer Science 2025-10-17 Zixi Wang , Yushe Cao , Yubo Huang , Jinzhu Wei , Jingzehua Xu , Shuai Zhang , Xin Lai

Medical data often exhibits long-tail distributions with heavy class imbalance, which naturally leads to difficulty in classifying the minority classes (i.e., boundary regions or rare objects). Recent work has significantly improved…

Computer Vision and Pattern Recognition · Computer Science 2023-07-19 Chenyu You , Weicheng Dai , Yifei Min , Lawrence Staib , Jasjeet S. Sekhon , James S. Duncan

In precision sports such as archery, athletes' performance depends on both biomechanical stability and psychological resilience. Traditional motion analysis systems are often expensive and intrusive, limiting their use in natural training…

Machine Learning · Computer Science 2025-11-19 Xianghe Liu , Jiajia Liu , Chuxian Xu , Minghan Wang , Hongbo Peng , Tao Sun , Jiaqi Xu

Current state-of-the-art human activity recognition is focused on the classification of temporally trimmed videos in which only one action occurs per frame. We propose a simple, yet effective, method for the temporal detection of activities…

Computer Vision and Pattern Recognition · Computer Science 2016-07-14 Gurkirt Singh , Fabio Cuzzolin

Understanding videos that contain multiple modalities is crucial, especially in egocentric videos, where combining various sensory inputs significantly improves tasks like action recognition and moment localization. However, real-world…

Computer Vision and Pattern Recognition · Computer Science 2025-03-04 Merey Ramazanova , Alejandro Pardo , Bernard Ghanem , Motasem Alfarra

Methods for unsupervised domain adaptation (UDA) help to improve the performance of deep neural networks on unseen domains without any labeled data. Especially in medical disciplines such as histopathology, this is crucial since large…

Computer Vision and Pattern Recognition · Computer Science 2023-02-03 Kevin Thandiackal , Luigi Piccinelli , Pushpak Pati , Orcun Goksel

Recent aerial object detection models rely on a large amount of labeled training data, which requires unaffordable manual labeling costs in large aerial scenes with dense objects. Active learning effectively reduces the data labeling cost…

Computer Vision and Pattern Recognition · Computer Science 2023-09-21 Dong Liang , Jing-Wei Zhang , Ying-Peng Tang , Sheng-Jun Huang

Pose estimation of the human body and hands is a fundamental problem in computer vision, and learning-based solutions require a large amount of annotated data. In this work, we improve the efficiency of the data annotation process for 3D…

Computer Vision and Pattern Recognition · Computer Science 2023-01-19 Qi Feng , Kun He , He Wen , Cem Keskin , Yuting Ye
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