Analysis and Retargeting of Ball Sports Video

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Presentation transcript:

Analysis and Retargeting of Ball Sports Video Stephan Kopf, Benjamin Guthier, Dirk Farin*, Jungong Han* Computer Science IV, Mannheim University, Germany *University of Technology Eindhoven, The Netherlands

Motivation Goal Improved visualization of sports video on handheld mobile devices source: en.wikipedia.org Novel video retargeting techniques like seam carving or warping  low quality due to distortion of court lines

Overview Sports Video Analysis Video Retargeting Playing frame detection Court line detection Player detection Ball detection Video Retargeting

Court Line Detection

Court Line Detection source: en.wikipedia.org

Player Detection Compensate camera motion Merge compensated frames into a background image: apply median filter to remove foreground objects Calculate difference image for each frame Cluster difference pixels into regions

Ball detection Challenges: Size and motion speed of the ball, blurring, interlacing artifacts, disconnected ball pixels slow motion fast motion

Video Retargeting cropping scaling sports video (zoom on player) retargeting

Thank you for your attention! Contact: Stephan Kopf, Mannheim University, Germany kopf@informatik.uni-mannheim.de Link to paper: http://dx.doi.org/10.1109/WACV.2011.5711477

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