Carnegie Mellon University
Spatio-Temporal View Interpolation

Sundar Vedula, Simon Baker, and Takeo Kanade
Proceedings of the 13th ACM Eurographics Workshop on Rendering, June, 2002.

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We propose a fully automatic algorithm for view interpolation of a completely non-rigid dynamic event across both space and time. The algorithm operates by combining images captured across space to compute voxel models of the scene shape at each time instant, and images captured across time to compute the ``scene flow'' between the voxel models. The scene-flow is the non-rigid 3D motion of every point in the scene. To interpolate in time, the voxel models are ``flowed'' using an appropriate multiple of the scene flow and a smooth surface fit to the result. The novel image is then computed by ray-casting to the surface at the intermediate time instant, following the scene flow to the neighboring time instants, projecting into the input images at those times, and finally blending the results. We use our algorithm to create re-timed slow-motion fly-by movies of dynamic real-world events.

Ray-tracing, Virtual Reality

Associated Center(s) / Consortia: Vision and Autonomous Systems Center
Associated Lab(s) / Group(s): Vision for Virtual Environments and Virtualized RealityTM
Associated Project(s): Spatio-Temporal View Interpolation and Scene Flow

Text Reference
Sundar Vedula, Simon Baker, and Takeo Kanade, "Spatio-Temporal View Interpolation," Proceedings of the 13th ACM Eurographics Workshop on Rendering, June, 2002.

BibTeX Reference
   author = "Sundar Vedula and Simon Baker and Takeo Kanade",
   title = "Spatio-Temporal View Interpolation",
   booktitle = "Proceedings of the 13th ACM Eurographics Workshop on Rendering",
   month = "June",
   year = "2002",