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In many sports, it is useful to analyse video of an athlete in competition for training purposes. In swimming, stroke rate is a common metric used by coaches; requiring a laborious labelling of each individual stroke. We show that using a…

Computer Vision and Pattern Recognition · Computer Science 2017-05-30 Brandon Victor , Zhen He , Stuart Morgan , Dino Miniutti

Monitoring swimmer performance is crucial for improving training and enhancing athletic techniques. Traditional methods for tracking swimmers, such as above-water and underwater cameras, face limitations due to the need for multiple cameras…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Thu Tran , Kenny Tsu Wei Choo , Shaohui Foong , Hitesh Bhardwaj , Shane Kyi Hla Win , Wei Jun Ang , Kenneth Goh , Rajesh Krishna Balan

Methods for creating a system to automate the collection of swimming analytics on a pool-wide scale are considered in this paper. There has not been much work on swimmer tracking or the creation of a swimmer database for machine learning…

Computer Vision and Pattern Recognition · Computer Science 2020-01-14 Timothy Woinoski , Alon Harell , Ivan V. Bajic

Sports analytics has been an up-and-coming field of research among professional sporting organizations and academic institutions alike. With the insurgence and collection of athlete data, the primary goal of such analysis is to improve…

Computer Vision and Pattern Recognition · Computer Science 2022-08-12 T. J. Woinoski , I. V. Bajic

This paper presents a table tennis stroke detection method from videos. The method relies on a two-stream Convolutional Neural Network processing in parallel the RGB Stream and its computed optical flow. The method has been developed as…

Computer Vision and Pattern Recognition · Computer Science 2021-12-23 Anam Zahra , Pierre-Etienne Martin

Competitive sports coverage increasingly includes information on athlete or team statistics and records. Sports video coverage has traditionally embedded representations of this data in fixed locations on the screen, but more recently also…

Human-Computer Interaction · Computer Science 2024-09-13 Lijie Yao , Anastasia Bezerianos , Romain Vuillemot , Petra Isenberg

Estimating action quality, the process of assigning a "score" to the execution of an action, is crucial in areas such as sports and health care. Unlike action recognition, which has millions of examples to learn from, the action quality…

Computer Vision and Pattern Recognition · Computer Science 2017-05-19 Paritosh Parmar , Brendan Tran Morris

Event cameras respond to scene dynamics and offer advantages to estimate motion. Following recent image-based deep-learning achievements, optical flow estimation methods for event cameras have rushed to combine those image-based methods…

Computer Vision and Pattern Recognition · Computer Science 2024-03-05 Shintaro Shiba , Yoshimitsu Aoki , Guillermo Gallego

Pacing strategies, defined by velocity and stroke rate profiles, are essential for peak performance in canoe sprint. While GPS is the gold standard for analysis, its limited availability necessitates automated video-based solutions. This…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Julian Ziegler , Daniel Matthes , Finn Gerdts , Patrick Frenzel , Torsten Warnke , Matthias Englert , Tina Koevari , Mirco Fuchs

Event-based cameras have shown great promise in a variety of situations where frame based cameras suffer, such as high speed motions and high dynamic range scenes. However, developing algorithms for event measurements requires a new class…

Computer Vision and Pattern Recognition · Computer Science 2018-08-14 Alex Zihao Zhu , Liangzhe Yuan , Kenneth Chaney , Kostas Daniilidis

Performance measures such as stride length in athletics and the pace of runners can be estimated using different tricks such as measuring the number of steps divided by the running length or helping with markers printed on the track.…

Computer Vision and Pattern Recognition · Computer Science 2025-07-08 Patryk Skorupski , Cosimo Distante , Pier Luigi Mazzeo

Event cameras such as DAVIS can simultaneously output high temporal resolution events and low frame-rate intensity images, which own great potential in capturing scene motion, such as optical flow estimation. Most of the existing optical…

Computer Vision and Pattern Recognition · Computer Science 2022-11-18 Zhexiong Wan , Yuchao Dai , Yuxin Mao

Human pose detection systems based on state-of-the-art DNNs are on the go to be extended, adapted and re-trained to fit the application domain of specific sports. Therefore, plenty of noisy pose data will soon be available from videos…

Computer Vision and Pattern Recognition · Computer Science 2020-04-22 Rainer Lienhart , Moritz Einfalt , Dan Zecha

In this paper we consider the problem of human pose estimation in real-world videos of swimmers. Swimming channels allow filming swimmers simultaneously above and below the water surface with a single stationary camera. These recordings can…

Computer Vision and Pattern Recognition · Computer Science 2020-04-22 Moritz Einfalt , Dan Zecha , Rainer Lienhart

The topic of object detection has been largely improved recently, especially with the development of convolutional neural network. However, there still exist a lot of challenging cases, such as small object, compact and dense or highly…

Computer Vision and Pattern Recognition · Computer Science 2020-03-02 Jinlong Kang , Jiaxiang Zheng , Heng Bai , Xiaoting Xue , Yang Zhou , Jun Guo

Event cameras respond to changes in log-brightness at the millisecond level, making them ideal for optical flow estimation. However, existing datasets from event cameras provide only low frame rate ground truth for optical flow, limiting…

Computer Vision and Pattern Recognition · Computer Science 2025-05-14 Yaozu Ye , Hao Shi , Kailun Yang , Ze Wang , Xiaoting Yin , Lei Sun , Yaonan Wang , Kaiwei Wang

Event cameras are bio-inspired sensors that asynchronously report intensity changes in microsecond resolution. DAVIS can capture high dynamics of a scene and simultaneously output high temporal resolution events and low frame-rate intensity…

Computer Vision and Pattern Recognition · Computer Science 2020-04-02 Liyuan Pan , Miaomiao Liu , Richard Hartley

Event cameras are novel bio-inspired sensors that offer advantages over traditional cameras (low latency, high dynamic range, low power, etc.). Optical flow estimation methods that work on packets of events trade off speed for accuracy,…

Computer Vision and Pattern Recognition · Computer Science 2024-03-05 Shintaro Shiba , Yoshimitsu Aoki , Guillermo Gallego

Athletes routinely undergo fitness evaluations to evaluate their training progress. Typically, these evaluations require a trained professional who utilizes specialized equipment like force plates. For the assessment, athletes perform drop…

Computer Vision and Pattern Recognition · Computer Science 2022-12-12 Soumyadip Roy , Chaitanya Roygaga , Nathaniel Blanchard , Aparna Bharati

Efficiently selecting an appropriate spike stream data length to extract precise information is the key to the spike vision tasks. To address this issue, we propose a dynamic timing representation for spike streams. Based on multi-layers…

Computer Vision and Pattern Recognition · Computer Science 2023-07-13 Lujie Xia , Ziluo Ding , Rui Zhao , Jiyuan Zhang , Lei Ma , Zhaofei Yu , Tiejun Huang , Ruiqin Xiong
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