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- W2078954324 abstract "The implicit and explicit use of 3D models for image sequence coding is discussed. For implicit use, a 3D model can be incorporated into motion compensating prediction. A scheme that estimates the displacement vector field with a rigid body motion constraint by recovering epipolar lines from an unconstrained displacement estimate and then repeating block matching along the epipolar line is proposed. Experimental results show that an improved displacement vector field can be obtained with a rigid body motion constraint. As an example for explicit use, various results with a facial animation model for videotelephony are discussed. A 13 X 16 B-spline mask can be adapted automatically to individual faces and is used to generate facial expressions based on FACS. A depth-from-defocus range camera suitable for real-time facial motion tracking is described. Finally, the real-time facial animation system `Traugott' is presented that has been used to generate several hours of broadcast video. Experiments suggest that a videophone system based on facial animation might require a transmission bitrate of 1 kbit/s or below." @default.
- W2078954324 created "2016-06-24" @default.
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- W2078954324 date "1994-09-16" @default.
- W2078954324 modified "2023-09-27" @default.
- W2078954324 title "<title>Image sequence coding using 3D scene models</title>" @default.
- W2078954324 doi "https://doi.org/10.1117/12.185961" @default.
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