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- W1996109744 abstract "This paper presents a simple and effective method to determine global camera motion using raw MPEG-1 motion vectors information obtained straight form real MPEG-1 streams such as those of the new HITACHI MP-EG1A digital camcorder. The simple approach we have experimented with robustly fits a global affine optic flow model to the motion vectors. Other more robust methods are also proposed. In order to cope with the group-of-frames (GOF) discontinuity of the MPEG stream, B frames are used backward to determine the 'missing link' to a previous GOF thereby ensuring continuity of the motion estimation across a reasonable number of frames. As a tested, we have applied the method to the image mosaicing problem, for which interesting results have been obtained. Although several other methods exists to perform camera motion estimation, the approach presented here is particularly interesting because exploits 'free' information present in MPEG streams and bypass the highly expensive correlation process.© (1998) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only." @default.
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- W1996109744 date "1998-01-09" @default.
- W1996109744 modified "2023-10-18" @default.
- W1996109744 title "<title>Using raw MPEG motion vectors to determine global camera motion</title>" @default.
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- W1996109744 doi "https://doi.org/10.1117/12.298354" @default.
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