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Video Matting

Ehsan Shahrian , Brian Price. Video Matting. Video Matting. - Difference in input. Video Matting. - Difference in input. Video Matting. - Coherence. Video Matting. - Introduction. Most video methods are extensions of image methods Common extensions Propagate/generate trimap

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Video Matting

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  1. EhsanShahrian, Brian Price Video Matting

  2. Video Matting - Difference in input

  3. Video Matting - Difference in input

  4. Video Matting - Coherence

  5. Video Matting - Introduction • Most video methods are extensions of image methods • Common extensions • Propagate/generate trimap • Compute matte using temporal information • Refine matte using temporal information

  6. Video Matting - Realtime Video Matting Video Input Automatic binary segmentation and boundary dilation Single-frame image matting Result Gong et al. Realtime video matting using multichannel Poisson equations. Graphics Interface 2010.

  7. Video Matting - Video matting via opacity propagation Tang et al. Video matting via opacity propagation. Visual Computer, 2012. Tang et al. Temporally consistent video matting based on bilayer segmentation. ICME 2010.

  8. Video Matting - Video matting via opacity propagation 3D matting Laplacian Tang et al. Video matting via opacity propagation. Visual Computer, 2012. Tang et al. Temporally consistent video matting based on bilayer segmentation. ICME 2010.

  9. Video Matting - Bayesian Video Matting Apostoloff et al. Bayesian video matting using Learnt Image Priors. CVPR 2004.

  10. Video Matting - Bayesian Video Matting Apostoloff et al. Bayesian video matting using Learnt Image Priors. CVPR 2004.

  11. Video Matting - Video Matting of Complex Scenes Chuang et al. Video Matting of Complex Scenes. TOG 2002.

  12. Video Matting - Multiframe nonlocal matting Laplacian Choi et al. Video matting using multiframe nonlocal matting Laplacian. ECCV 2012.

  13. Video Matting - Multiframe nonlocal matting Laplacian Choi et al. Video matting using multiframe nonlocal matting Laplacian. ECCV 2012. • Spatiotemporal Refinement • Nonlocal mean regularization

  14. Video Matting - Motion-Aware KNN Laplacian Li et al. Motion-aware KNN Laplacian for video matting. ICCV 2013.

  15. Video Matting - Temporally Coherent Video Matting Lee et al. Temporally coherent video matting. Graphical Models 2010.

  16. Video Matting - Video Snapcut Temporal coherency Color coherence Smoothness

  17. Video Matting Toward Temporally Coherent Video Matting X. Bai, J. Wang, and D. Simons, “Towards temporally-coherent video matting,“ Computer Vision/Computer Graphics Collaboration Techniques, pp. 63-74, 2011

  18. Video Matting - Temporally Coherent and Spatially Accurate

  19. Video Matting - Temporally Coherent and Spatially Accurate Sampling strategy

  20. Video Matting - Temporally Coherent and Spatially Accurate Sampling strategy

  21. Video Matting - Temporally Coherent and Spatially Accurate Selection of best (F,B) pair Frame t Frame t+1 Estimated matte Warped matte T. Brox, A. Bruhn, N. Papenberg, and J. Weickert, “High accuracy optical flow estimation based on a theory for warping," pp. 25-36, 2004.

  22. Video Matting - Temporally Coherent and Spatially Accurate Post processing Temporal Laplacian Frames Conventional Laplacian

  23. Video Matting - Temporally Coherent and Spatially Accurate

  24. Video Matting - Multiple video streams Joshi et al. Natural Video Matting using Camera Arrays. Siggraph 2006. McGuire et al. Defocus Video Matting. Siggraph 2005.

  25. Demo - Adobe AfterEffects Refine Edge

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