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Existing temporal action localization (TAL) works rely on a large number of training videos with exhaustive segment-level annotation, preventing them from scaling to new classes. As a solution to this problem, few-shot TAL (FS-TAL) aims to…

Computer Vision and Pattern Recognition · Computer Science 2021-10-22 Sauradip Nag , Xiatian Zhu , Tao Xiang

In this paper, we introduce a challenging new dataset, MLB-YouTube, designed for fine-grained activity detection. The dataset contains two settings: segmented video classification as well as activity detection in continuous videos. We…

Computer Vision and Pattern Recognition · Computer Science 2018-04-11 AJ Piergiovanni , Michael S. Ryoo

We present a reliable temporal grounding pipeline for video-to-analytic alignment of basketball broadcast footage. Given a series of frames as input, our method quickly and accurately extracts time-remaining and quarter values from…

Computer Vision and Pattern Recognition · Computer Science 2024-11-06 Levi Harris

The CoachAI Badminton 2023 Track1 initiative aim to automatically detect events within badminton match videos. Detecting small objects, especially the shuttlecock, is of quite importance and demands high precision within the challenge. Such…

Computer Vision and Pattern Recognition · Computer Science 2024-02-15 Po-Yung Chou , Yu-Chun Lo , Bo-Zheng Xie , Cheng-Hung Lin , Yu-Yung Kao

RGB-D action and gesture recognition remain an interesting topic in human-centered scene understanding, primarily due to the multiple granularities and large variation in human motion. Although many RGB-D based action and gesture…

Computer Vision and Pattern Recognition · Computer Science 2023-09-12 Yujun Ma , Benjia Zhou , Ruili Wang , Pichao Wang

This report presents our method for Temporal Action Localisation (TAL), which focuses on identifying and classifying actions within specific time intervals throughout a video sequence. We employ a data augmentation technique by expanding…

Computer Vision and Pattern Recognition · Computer Science 2024-10-15 Yinan Han , Qingyuan Jiang , Hongming Mei , Yang Yang , Jinhui Tang

On public benchmarks, current action recognition techniques have achieved great success. However, when used in real-world applications, e.g. sport analysis, which requires the capability of parsing an activity into phases and…

Computer Vision and Pattern Recognition · Computer Science 2020-04-15 Dian Shao , Yue Zhao , Bo Dai , Dahua Lin

This paper addresses the challenge of automated sports video analysis, which has traditionally been limited by computationally intensive models requiring server-side processing and lacking fine-grained understanding of athletic movements.…

Computer Vision and Pattern Recognition · Computer Science 2025-08-26 Sai Varun Kodathala , Yashwanth Reddy Vutukoori , Rakesh Vunnam

Rapid progress and superior performance have been achieved for skeleton-based action recognition recently. In this article, we investigate this problem under a cross-dataset setting, which is a new, pragmatic, and challenging task in…

Computer Vision and Pattern Recognition · Computer Science 2022-07-19 Yansong Tang , Xingyu Liu , Xumin Yu , Danyang Zhang , Jiwen Lu , Jie Zhou

With the continuous research on Deepfake forensics, recent studies have attempted to provide the fine-grained localization of forgeries, in addition to the coarse classification at the video-level. However, the detection and localization…

Computer Vision and Pattern Recognition · Computer Science 2022-10-31 Wu Haiwei , Zhou Jiantao , Zhang Shile , Tian Jinyu

During the past few years advancements in sports information systems and technology has allowed us to collect a number of detailed spatio-temporal data capturing various aspects of basketball. For example, shot charts, that is, maps…

Machine Learning · Computer Science 2018-08-24 Evangelos Papalexakis , Konstantinos Pelechrinis

During the training for snowboard big air, one of the most popular winter sports, athletes and coaches extensively shoot and check their jump attempts using a single camera or smartphone. However, by watching videos sequentially, it is…

Computer Vision and Pattern Recognition · Computer Science 2021-12-22 Seiji Matsumura , Dan Mikami , Naoki Saijo , Makio Kashino

Although various image-based domain adaptation (DA) techniques have been proposed in recent years, domain shift in videos is still not well-explored. Most previous works only evaluate performance on small-scale datasets which are saturated.…

Computer Vision and Pattern Recognition · Computer Science 2019-06-10 Min-Hung Chen , Zsolt Kira , Ghassan AlRegib

An integral part of video analysis and surveillance is temporal activity detection, which means to simultaneously recognize and localize activities in long untrimmed videos. Currently, the most effective methods of temporal activity…

Computer Vision and Pattern Recognition · Computer Science 2020-03-13 Lingling Zhang , Xiaojun Chang , Jun Liu , Minnan Luo , Sen Wang , Zongyuan Ge , Alexander Hauptmann

In this paper, we introduce Coarse-Fine Networks, a two-stream architecture which benefits from different abstractions of temporal resolution to learn better video representations for long-term motion. Traditional Video models process…

Computer Vision and Pattern Recognition · Computer Science 2021-04-02 Kumara Kahatapitiya , Michael S. Ryoo

Combining sports and machine learning involves leveraging ML algorithms and techniques to extract insight from sports-related data such as player statistics, game footage, and other relevant information. However, datasets related to figure…

Computer Vision and Pattern Recognition · Computer Science 2024-10-31 Wei-Yi Chen , Yi-Ling Lin , Yu-An Su , Wei-Hsin Yeh , Lun-Wei Ku

The present few-shot temporal action localization model can't handle the situation where videos contain multiple action instances. So the purpose of this paper is to achieve manifold action instances localization in a lengthy untrimmed…

Computer Vision and Pattern Recognition · Computer Science 2024-08-27 Fengshun Wang , Qiurui Wang , Yuting Wang

Most current pipelines for spatio-temporal action localization connect frame-wise or clip-wise detection results to generate action proposals, where only local information is exploited and the efficiency is hindered by dense per-frame…

Computer Vision and Pattern Recognition · Computer Science 2020-08-20 Yuxi Li , Weiyao Lin , John See , Ning Xu , Shugong Xu , Ke Yan , Cong Yang

Current methods for action recognition primarily rely on deep convolutional networks to derive feature embeddings of visual and motion features. While these methods have demonstrated remarkable performance on standard benchmarks, we are…

Computer Vision and Pattern Recognition · Computer Science 2020-05-21 Dian Shao , Yue Zhao , Bo Dai , Dahua Lin

In recent years, few-shot action recognition has achieved remarkable performance through spatio-temporal relation modeling. Although a wide range of spatial and temporal alignment modules have been proposed, they primarily address spatial…

Computer Vision and Pattern Recognition · Computer Science 2024-11-19 Hanyu Guo , Wanchuan Yu , Suzhou Que , Kaiwen Du , Yan Yan , Hanzi Wang
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