Results 31 to 40 of about 262,492 (221)

Tracking a table tennis ball for umpiring purposes [PDF]

open access: yes, 2015
This study investigates tracking a table-tennis ball rapidly from video captured using low-cost equipment for umpiring purposes. A number of highly efficient algorithms have been developed for this purpose.
Dooley, Laurence   +3 more
core   +2 more sources

Effect of low-compression balls on wheelchair tennis match-play [PDF]

open access: yes, 2014
The purpose of this study was to compare court-movement variables and physiological responses to wheelchair tennis match-play when using low versus standard compression tennis balls.
Cooper, RA   +7 more
core   +1 more source

On sphere-filling ropes [PDF]

open access: yes, 2010
What is the longest rope on the unit sphere? Intuition tells us that the answer to this packing problem depends on the rope's thickness. For a countably infinite number of prescribed thickness values we construct and classify all solution curves.
Gerlach, Henryk, von der Mosel, Heiko
core   +2 more sources

Motion analysis of table tennis ball and racket mutual collision

open access: yesNihon Kikai Gakkai ronbunshu
Table tennis, a sport that is played widely around the world, and even at the Olympics, is also a recreational sport enjoyed in diverse facilities that can accommodate table tennis tables. Table tennis ball rotation during the game is not well understood
Yuna ISHIZUKA   +4 more
doaj   +1 more source

Audio-based performance evaluation of squash players [PDF]

open access: yes, 2017
In competitive sports it is often very hard to quantify the performance. A player to score or overtake may depend on only millesimal of seconds or millimeters.
Fenyvesi, Nora   +3 more
core   +2 more sources

Reliable Real-Time Ball Tracking for Robot Table Tennis

open access: yesRobotics, 2019
Robot table tennis systems require a vision system that can track the ball position with low latency and high sampling rate. Altering the ball to simplify the tracking using, for instance, infrared coating changes the physics of the ball trajectory. As a
Sebastian Gomez-Gonzalez   +3 more
doaj   +1 more source

Tennis Flat Serve Kinematic Features in Young Athletes: A Feasibility Study

open access: yesInternational Journal of Disabilities Sports and Health Sciences
The aim of this study is to examine body kinematics in tennis straight serve. 5 elite male tennis players (mean age 18.4±3.3 years, mean height 182.3±5.6 cm, mean weight 72.2±7.9 kg) were included in the study. We determined the angle of inclination from
Yong-gwan Song, Sang-hyup Choı
doaj   +1 more source

Influence of a Prolonged Tennis Match Play on Serve Biomechanics. [PDF]

open access: yesPLoS ONE, 2016
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 ...
Caroline Martin   +3 more
doaj   +1 more source

Brain regions concerned with perceptual skills in tennis: An fMRI study [PDF]

open access: yes, 2007
Sporting performance makes special demands on perceptual skills, but the neural mechanisms underlying such performance are little understood. We address this issue, making use of fMRI to identify the brain areas activated in viewing and responding to ...
Abernethy   +28 more
core   +1 more source

Customizing Tactile Sensors via Machine Learning‐Driven Inverse Design

open access: yesAdvanced Science, EarlyView.
ABSTRACT Replicating the sophisticated sense of touch in artificial systems requires tactile sensors with precisely tailored properties. However, manually navigating the complex microstructure‐property relationship results in inefficient and suboptimal designs.
Baocheng Wang   +15 more
wiley   +1 more source

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