Slow motion replay is a special effect used in the video entertainment field. It consists in a presentation of a video scene at a rate display lower than the original. Already consolidated as a commercial feature of analog video players, today slow motion is likely to be extended to the digital environment. Purpose of this paper is to present a technique combining fractals (I.F.S.) and wavelets to obtain a subjectively pleasant zoom and slow motion of digital video sequences. Active scene detection and post processing techniques are used to reduce computational cost and improve visual quality respectively. This study shows that the proposed technique produces better results than the state of the art techniques based either on data replication or classical interpolation.
Slow motion replay of video sequences using fractal zooming
GIUSTO, DANIELE;MURRONI, MAURIZIO;
2005-01-01
Abstract
Slow motion replay is a special effect used in the video entertainment field. It consists in a presentation of a video scene at a rate display lower than the original. Already consolidated as a commercial feature of analog video players, today slow motion is likely to be extended to the digital environment. Purpose of this paper is to present a technique combining fractals (I.F.S.) and wavelets to obtain a subjectively pleasant zoom and slow motion of digital video sequences. Active scene detection and post processing techniques are used to reduce computational cost and improve visual quality respectively. This study shows that the proposed technique produces better results than the state of the art techniques based either on data replication or classical interpolation.
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