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Open AccessProceedings ArticleDOI

TennisSense: A platform for extracting semantic information from multi-camera tennis data

TLDR
TennisSense, a technology platform for the digital capture, analysis and retrieval of tennis training and matches, is introduced and the algorithms for extracting useful metadata from the overhead court camera are described and evaluated.
Abstract
In this paper, we introduce TennisSense, a technology platform for the digital capture, analysis and retrieval of tennis training and matches. Our algorithms for extracting useful metadata from the overhead court camera are described and evaluated. We track the tennis ball using motion images for ball candidate detection and then link ball candidates into locally linear tracks. From these tracks we can infer when serves and rallies take place. Using background subtraction and hysteresis-type blob tracking, we track the tennis players positions. The performance of both modules is evaluated using ground-truthed data. The extracted metadata provides valuable information for indexing and efficient browsing of hours of multi-camera tennis footage and we briefly illustrative how this data is used by our tennis-coach playback interface.

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Citations
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Journal ArticleDOI

TenniVis: Visualization for Tennis Match Analysis

TL;DR: TenniVis is proposed, a novel tennis match visualization system that relies entirely on data that can be easily collected, such as score, point outcomes, point lengths, service information, and match videos that can been captured by one consumer-level camera.
Journal ArticleDOI

ShuttleSpace: Exploring and Analyzing Movement Trajectory in Immersive Visualization

TL;DR: ShuttleSpace is presented, an immersive analytics system to assist experts in analyzing trajectory data in badminton that leverages the peripheral vision to combine the 2D and 3D visualizations and the VR controller to support natural interactions via a stroke metaphor.
Journal ArticleDOI

Ball tracking in sports: a survey

TL;DR: An exhaustive survey of all the published research works on ball tracking in a categorical manner is presented to present discussions on the published work so far and views and opinions followed by a modified block diagram of the tracking process.
Journal ArticleDOI

A deep learning ball tracking system in soccer videos

TL;DR: A novel deep learning approach for 2D ball detection and tracking (DLBT) in soccer videos posing various challenges is presented and yields extraordinary accurate and robust tracking results compared to the other contemporary 2D trackers.
Proceedings ArticleDOI

Convolutional Neural Networks Based Ball Detection in Tennis Games

TL;DR: An innovative deep learning approach to the identification of the ball in tennis context is presented, exploiting the potential of a convolutional neural network classifier to decide whether a ball is being observed in a single frame, overcoming the typical issues that can occur dealing with classical approaches on long video sequences.
References
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Journal ArticleDOI

Event detection in field sports video using audio-visual features and a support vector Machine

TL;DR: A novel audio-visual feature-based framework for event detection in broadcast video of multiple different field sports and the results suggest that high event retrieval and content rejection statistics are achievable.
Proceedings ArticleDOI

Action capture with accelerometers

TL;DR: A performance animation system that leverages the power of low-cost accelerometers, readily available motion capture databases, and construction techniques from e-textiles, built with only off-the-shelf parts.