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We describe a latent approach that learns to detect actions in long sequences given training videos with only whole-video class labels. Our approach makes use of two innovations to attention-modeling in weakly-supervised learning. First,…

Computer Vision and Pattern Recognition · Computer Science 2019-08-20 Phuc Xuan Nguyen , Deva Ramanan , Charless C. Fowlkes

Deep Learning is becoming increasingly relevant in Embedded and Internet-of-things applications. However, deploying models on embedded devices poses a challenge due to their resource limitations. This can impact the model's inference…

Machine Learning · Computer Science 2024-03-14 Max Sponner , Lorenzo Servadei , Bernd Waschneck , Robert Wille , Akash Kumar

The goal of weakly supervised video anomaly detection is to learn a detection model using only video-level labeled data. However, prior studies typically divide videos into fixed-length segments without considering the complexity or…

Computer Vision and Pattern Recognition · Computer Science 2023-12-05 Chen Zhang , Guorong Li , Yuankai Qi , Hanhua Ye , Laiyun Qing , Ming-Hsuan Yang , Qingming Huang

Temporal action localization is a recently-emerging task, aiming to localize video segments from untrimmed videos that contain specific actions. Despite the remarkable recent progress, most two-stage action localization methods still suffer…

Computer Vision and Pattern Recognition · Computer Science 2019-08-05 Guoqiang Gong , Liangfeng Zheng , Kun Bai , Yadong Mu

Weakly-supervised temporal action localization aims to localize action instances temporal boundary and identify the corresponding action category with only video-level labels. Traditional methods mainly focus on foreground and background…

Computer Vision and Pattern Recognition · Computer Science 2021-04-08 Sanqing Qu , Guang Chen , Zhijun Li , Lijun Zhang , Fan Lu , Alois Knoll

Deep convolutional neural networks have shown remarkable performance on various computer vision tasks, and yet, they are susceptible to picking up spurious correlations from the training signal. So called `shortcuts' can occur during…

Computer Vision and Pattern Recognition · Computer Science 2022-09-21 Mobarakol Islam , Ben Glocker

In this study, we introduce DeepLocalization, an innovative framework devised for the real-time localization of actions tailored explicitly for monitoring driver behavior. Utilizing the power of advanced deep learning methodologies, our…

Computer Vision and Pattern Recognition · Computer Science 2025-06-12 Mohammed Shaiqur Rahman , Ibne Farabi Shihab , Lynna Chu , Anuj Sharma

Few-shot semantic segmentation is the task of learning to locate each pixel of the novel class in the query image with only a few annotated support images. The current correlation-based methods construct pair-wise feature correlations to…

Computer Vision and Pattern Recognition · Computer Science 2023-01-20 Huafeng Liu , Pai Peng , Tao Chen , Qiong Wang , Yazhou Yao , Xian-Sheng Hua

Infrared and visible video fusion plays a critical role in intelligent surveillance and low-light monitoring. However, maintaining temporal stability while preserving spatial detail remains a fundamental challenge. Existing methods either…

Computer Vision and Pattern Recognition · Computer Science 2026-04-03 Xilai Li , Chusheng Fang , Xiaosong Li

Temporal action detection (TAD) aims to determine the semantic label and the temporal interval of every action instance in an untrimmed video. It is a fundamental and challenging task in video understanding. Previous methods tackle this…

Computer Vision and Pattern Recognition · Computer Science 2022-08-12 Xiaolong Liu , Qimeng Wang , Yao Hu , Xu Tang , Shiwei Zhang , Song Bai , Xiang Bai

Fine-grained video action recognition can be conceptualized as a video-text matching problem. Previous approaches often rely on global video semantics to consolidate video embeddings, which can lead to misalignment in video-text pairs due…

Computer Vision and Pattern Recognition · Computer Science 2024-10-21 Enqi Liu , Liyuan Pan , Yan Yang , Yiran Zhong , Zhijing Wu , Xinxiao Wu , Liu Liu

Most existing real-time deep models trained with each frame independently may produce inconsistent results across the temporal axis when tested on a video sequence. A few methods take the correlations in the video sequence into…

Computer Vision and Pattern Recognition · Computer Science 2022-02-28 Yifan Liu , Chunhua Shen , Changqian Yu , Jingdong Wang

We present a learning algorithm for human activity recognition in videos. Our approach is designed for UAV videos, which are mainly acquired from obliquely placed dynamic cameras that contain a human actor along with background motion.…

Computer Vision and Pattern Recognition · Computer Science 2025-02-13 Divya Kothandaraman , Ming Lin , Dinesh Manocha

Motivated by the previous success of Two-Dimensional Convolutional Neural Network (2D CNN) on image recognition, researchers endeavor to leverage it to characterize videos. However, one limitation of applying 2D CNN to analyze videos is…

Computer Vision and Pattern Recognition · Computer Science 2020-07-16 Junwu Weng , Donghao Luo , Yabiao Wang , Ying Tai , Chengjie Wang , Jilin Li , Feiyue Huang , Xudong Jiang , Junsong Yuan

This thesis explore different approaches using Convolutional and Recurrent Neural Networks to classify and temporally localize activities on videos, furthermore an implementation to achieve it has been proposed. As the first step, features…

Computer Vision and Pattern Recognition · Computer Science 2017-03-06 Alberto Montes , Amaia Salvador , Santiago Pascual , Xavier Giro-i-Nieto

Temporal action segmentation (TAS) demands dense temporal supervision, yet most of the annotation cost in untrimmed videos is spent identifying and refining action transitions, where segmentation errors concentrate and small temporal shifts…

Computer Vision and Pattern Recognition · Computer Science 2026-04-17 Halil Ismail Helvaci , Sen-ching Samson Cheung

Understanding human activity is a crucial aspect of developing intelligent robots, particularly in the domain of human-robot collaboration. Nevertheless, existing systems encounter challenges such as over-segmentation, attributed to errors…

Robotics · Computer Science 2024-10-11 Hao Xing , Darius Burschka

The goal of this paper is to discover, segment, and track independently moving objects in complex visual scenes. Previous approaches have explored the use of optical flow for motion segmentation, leading to imperfect predictions due to…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Junyu Xie , Weidi Xie , Andrew Zisserman

Deep learning advancements have revolutionized scalable classification in many domains including computer vision. However, when it comes to wearable-based classification and domain adaptation, existing computer vision-based deep learning…

Computer Vision and Pattern Recognition · Computer Science 2023-07-04 Yidong Zhu , Md Mahmudur Rahman , Mohammad Arif Ul Alam

Video prediction is a pixel-wise dense prediction task to infer future frames based on past frames. Missing appearance details and motion blur are still two major problems for current predictive models, which lead to image distortion and…

Computer Vision and Pattern Recognition · Computer Science 2020-05-25 Beibei Jin , Yu Hu , Qiankun Tang , Jingyu Niu , Zhiping Shi , Yinhe Han , Xiaowei Li