Filters








312 Hits in 8.4 sec

Reliable Real-Time Ball Tracking for Robot Table Tennis

Sebastian Gomez-Gonzalez, Yassine Nemmour, Bernhard Schölkopf, Jan Peters
2019 Robotics  
As a result, table tennis systems use custom tracking systems to track the ball based on heuristic algorithms respecting the real-time constrains applied to RGB images captured with a set of cameras.  ...  Robot table tennis systems require a vision system that can track the ball position with low latency and high sampling rate.  ...  Subsequently, we discuss how to estimate a single 3D ball position from multiple camera observations.  ... 
doi:10.3390/robotics8040090 fatcat:z25mxy4hyfg53aumimlf5inszi

3D Estimation and Visualization of Motion in a Multicamera Network for Sports

Anil Kumar, P. Shashidhar Chavan, V.K. Sharatchandra, Sumam David, Philip Kelly, Noel E. O'Connor
2011 2011 Irish Machine Vision and Image Processing Conference  
In this work, we develop image processing and computer vision techniques for visually tracking a tennis ball, in 3D, on a court instrumented with multiple low-cost IP cameras.  ...  This technique uses both the extracted 2D ball information from two or more camera views, plus camera calibration information.  ...  In this work, we focus on tracking a tennis ball in 3D space during a tennis match using the videos obtained from lowcost camera network.  ... 
doi:10.1109/imvip.2011.12 dblp:conf/imvip/KumarCSDKO11 fatcat:j5dwqb6ehzhafeo4esgut67nnm

Vision guided dual arms robotic system with DSP and FPGA integrated system structure

Shiuh-Jer Huang, Jian-Cheng Huang
2011 Journal of Mechanical Science and Technology  
The hardware control structure should be planned ingeniously to execute the complicate computation of 3D image processing and manipulate a multi degree of freedom dual arms motion control, especially for  ...  Here a 7 DOF dual arms robot with FPGA hardware control structure and a digital signal processor (DSP) based CMOS stereo vision system are designed and built in our lab.  ...  Fig. 11 .Fig. 12 . 1112 Robot left arm holds a stick with table-tennis ball at end. 3D motion trajectories of the table-tennis ball extracted by stereo vision.  ... 
doi:10.1007/s12206-011-0625-3 fatcat:bqy74ydtyrfvhkq2kb5nf6wage

Single view silhouette fitting techniques for estimating tennis racket position

Nathan Elliott, Simon Choppin, Simon Goodwill, Terry Senior, John Hart, Tom Allen
2017 Sports Engineering  
From a camera distance of 14 m, 3D racket position was estimated providing a spatial accuracy of 1.9 ± 0.14 mm, similar to recent 3D video marker tracking studies of tennis.  ...  The aim of this paper is to provide validation of these single view fitting techniques to estimate the pose of a tennis racket.  ...  Marker-free techniques for analysis of movement in 3D often apply a Visual Hull [14] , which uses silhouettestypically extracted digitally-from a number of camera views to reconstruct a volume of interest  ... 
doi:10.1007/s12283-017-0243-0 fatcat:q4buh3zdd5g2losfe2ln24a5hm

Table Tennis Capture System Based on Image Recognition and Modeling

Yajun Pang, Zahid Mehmood
2022 Scientific Programming  
This article takes table tennis as the research object, mainly extracts a large number of table tennis video trajectories, and combines the kinematic analysis method to reduce the noise of the extracted  ...  Simulation and experimental results show that the proposed algorithm can effectively estimate the trajectory, linear velocity, and angular velocity parameters of a table tennis ball, and the selection  ...  Simulation e above content has completed the estimation of the motion trajectory parameters and the estimation of the ball rotation parameters for the table tennis motion model and the camera working model  ... 
doi:10.1155/2022/4611428 fatcat:tpzuuhqgvzdn7mqedyutezx7aa

Towards the next generation of exergames: Flexible and personalised assessment-based identification of tennis swings [article]

Boris Bačić
2018 arXiv   pre-print
The aim of this paper is to demonstrate a novel approach to automate identification of tennis swings executed with erroneous technique without recorded ball impact.  ...  The presented solution is able to learn from a small dataset and capture two subjective swing-technique assessment criteria from a coach.  ...  This multidisciplinary work was also supported by New Zealand tennis coaches Shelley Bryce (née Stephens) and Kevin Woolcott who took their time and efforts by participating in 3D replay assessment of  ... 
arXiv:1804.06948v2 fatcat:7sd3lijxnzbetkb5gn4dkqcxsa

Application of motion capture technology for sport performance analysis (El uso de la tecnología de captura de movimiento para el análisis del rendimiento deportivo)

Basilio Pueo, Jose Manuel Jimenez-Olmedo
2017 Retos: Nuevas Tendencias en Educación Física, Deportes y Recreación  
Resultant records were screened to distribute them according to the following analysis categories: biomechanical motion analysis, validation of new systems and performance enhancement.  ...  The aim of this paper is to systematically review the latest developments of motion capture systems for the analysis of sport performance.  ...  These systems use a variety of capturing techniques, from multiple video cameras working with infrared light to single-camera systems with additional sensors to retrieve depth information from scene (  ... 
doi:10.47197/retos.v0i32.56072 fatcat:ffahdtrqxfd47lkjc2toplrdpe

Measuring Upper Limb Kinematics of Forehand and Backhand Topspin Drives with IMU Sensors in Wheelchair and Able-Bodied Table Tennis Players

Jia-Wen Yam, Jing-Wen Pan, Pui-Wah Kong
2021 Sensors  
To better understand the biomechanics of para-table tennis players, this study compared the shoulder, elbow, and wrist joint kinematics among able-bodied (AB) and wheelchair players in different classifications  ...  Hence, traditional table tennis programs targeting skills and techniques for able-bodied players are unsuitable for para-players.  ...  Traditionally, table tennis techniques and players' movements are analyzed using video analysis [5] , high-speed cameras for slow-motion [6] , and 3D motion capture systems [7] .  ... 
doi:10.3390/s21248303 pmid:34960397 pmcid:PMC8706454 fatcat:emmb6n4k5rdl3o4xrldebubupy

RACKET: Real-time autonomous computation of kinematic elements in tennis

Julien Pansiot, Ahmed Elsaify, Benny Lo, Guang-Zhong Yang
2009 2009 IEEE 12th International Conference on Computer Vision Workshops, ICCV Workshops  
This paper proposes the use of a Visual Sensor Network (VSN) for tracking the motion of tennis players on court in real-time.  ...  The proposed system is capable of tracking a tennis player at 10 to 15 frames per seconds.  ...  Acknowledgements The authors would like to thank Karl Cooke from the Lawn Tennis Association (LTA), for facilitating numerous experiments on high-profile tennis matches and his insights on the coaches  ... 
doi:10.1109/iccvw.2009.5457624 dblp:conf/iccvw/PansiotELY09 fatcat:uhjtd4xkgvdzrhm4frxwrq5lty

Application of Table Tennis Ball Trajectory and Rotation-Oriented Prediction Algorithm Using Artificial Intelligence

Qiang Liu, Hairong Ding
2022 Frontiers in Neurorobotics  
The principle of the trajectory prediction of the table tennis ball (TTB) based on AI is briefly introduced.  ...  After analyzing the application and development of AI, it is introduced into sports and applied to table tennis competitions and training.  ...  The trajectory of the table tennis ball in the air is expressed by three kinematic parameters: spatial coordinates, velocity, and acceleration.  ... 
doi:10.3389/fnbot.2022.820028 pmid:35645761 pmcid:PMC9131050 fatcat:4kair2y2cjayfbni36ztut4tyi

Rotation sequence to report humerothoracic kinematics during 3D motion involving large horizontal component: application to the tennis forehand drive

Thomas Creveaux, Violaine Sevrez, Raphaël Dumas, Laurence Chèze, Isabelle Rogowski
2017 Sports Biomechanics  
This study was supported by the "Agence Nationale pour la Recherche" and the "pôle de Compétitivité Sporaltec" [ANR ACE n°2010-BLANC-901].  ...  An eight digital-camera opto-electronic Motion Analysis system (500 Hz, Santa Rosa, California) was used to record the 3D trajectories of the markers during play.  ...  For each of the aforementioned parameters, the mean and standard deviations values presented in the tables were computed from the average of the 10 individual trials.  ... 
doi:10.1080/14763141.2016.1260765 pmid:28632057 fatcat:7ih6zcyavfe5bloe6chqae54mi

A unified and efficient framework for court-net sports video analysis using 3D camera modeling

Jungong Han, Peter H. N. de With, Alan Hanjalic, Raimondo Schettini, Nicu Sebe
2007 Multimedia Content Access: Algorithms and Systems  
To this end, our framework employs the concept of multi-level analysis, where a novel 3-D camera modeling is utilized to bridge the gap between the object-level and the scene-level analysis.  ...  We illustrate the performance of the proposed system by evaluating it for a variety of court-net sports videos containing badminton, tennis and volleyball, and we show that the feature detection performance  ...  In early work, 6 the authors describe a calibration algorithm for tennis courts, using a simplified camera model that only considers the camera tilt angle, the camera distance from the court field, and  ... 
doi:10.1117/12.705943 fatcat:bmgvy736cfehpeir23wh7vra3i

A Survey of Content-Aware Video Analysis for Sports

Huang-Chia Shih
2018 IEEE transactions on circuits and systems for video technology (Print)  
Previous surveys have focused on the methodologies of sports video analysis from the spatiotemporal viewpoint instead of a content-based viewpoint, and few of these studies have considered semantics.  ...  Specifically, we focus on the video content analysis techniques applied in sportscasts over the past decade from the perspectives of fundamentals and general review, a content hierarchical model, and trends  ...  [171] used camera motion parameters, including the number of stages in camera motion, tilt motion, and camera angle, in a method for detecting seven types of American football plays.  ... 
doi:10.1109/tcsvt.2017.2655624 fatcat:rwqzu46sgfb7tpkcav4ysmh6ae

Influence of a Prolonged Tennis Match Play on Serve Biomechanics

Caroline Martin, Benoit Bideau, Paul Delamarche, Richard Kulpa, Mikhail A. Lebedev
2016 PLoS ONE  
The aim of this study was to quantify kinematic, kinetic and performance changes that occur in the serve throughout a prolonged tennis match play.  ...  Serves of eight male advanced tennis players were recorded with a motion capture system before, at mid-match, and after a 3hour tennis match.  ...  Contributed reagents/materials/analysis tools: CM BB PD RK. Wrote the paper: CM BB RK.  ... 
doi:10.1371/journal.pone.0159979 pmid:27532421 pmcid:PMC4993075 fatcat:r3jyu7rcjbhtxd5ipf2b73iue4

Computational intelligence for qualitative coaching diagnostics: Automated assessment of tennis swings to improve performance and safety [article]

Boris Bačić, Patria Hume
2017 arXiv   pre-print
over virtual camera 3D replay and an end-of-session progress report.  ...  three-dimensional tennis motion data acquired from multi-camera video.  ...  In addition, we wish to acknowledge New Zealand tennis coaches, Kevin Woolcott and Shelley Bryce for their valuable comments regarding the user interaction aspects of the prototype and the tennis data  ... 
arXiv:1711.09562v1 fatcat:gnxqwwlt7fbxvi7kwdfu662h3u
« Previous Showing results 1 — 15 out of 312 results