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Web-based Clinician Guide to Record Compatible Video of Standardized Drinking Task Kinematics for Computer Vision Analysis
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Court Reconstruction for Camera Calibration in Broadcast Basketball Videos.

Pei-Chih Wen, Wei-Chih Cheng, Yu-Shuen Wang

    IEEE Transactions on Visualization and Computer Graphics
    |January 24, 2017
    PubMed
    Summary

    This study presents a new camera calibration technique for basketball videos. It enables accurate tactical analysis and video retrieval by transforming player movements to standard court coordinates.

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    Area of Science:

    • Computer Vision
    • Sports Analytics
    • Video Processing

    Background:

    • Camera calibration is crucial for analyzing sports videos.
    • Previous methods struggle with varying lighting and occlusions.
    • Standardized court coordinates are needed for consistent analysis.

    Purpose of the Study:

    • To introduce a robust camera calibration technique for basketball videos.
    • To enable accurate player position transformation to standard court coordinates.
    • To facilitate applications like tactical analysis and semantic video retrieval.

    Main Methods:

    • Reconstructing a panoramic basketball court from video.
    • Warping the reconstructed court to a standard court.
    • Simultaneously processing all video frames for calibration.

    Main Results:

    • Achieved robust camera calibration, overcoming illumination changes and player occlusions.
    • Developed a stroke-based system for semantic basketball video retrieval.
    • Enabled trajectory rectification to standard court coordinates for query.

    Conclusions:

    • The proposed technique offers a robust solution for camera calibration in basketball videos.
    • It enhances the capabilities of tactical analysis and video retrieval systems.
    • Simultaneous frame processing improves accuracy and resilience.