Space-time surface reconstruction using incompressible flow
ACM SIGGRAPH Asia 2008 papers
A surface deformation framework for 3d shape recovery
MRCS'06 Proceedings of the 2006 international conference on Multimedia Content Representation, Classification and Security
Non-rigid 3D shape tracking from multiview video
Computer Vision and Image Understanding
| Hi-index | 0.00 |
By reconstructing time-varying geometry one frame at a time, one ignores the continuity of natural motion, wasting useful information about the underlying video-image formation process and taking into account temporally discontinuous reconstruction results. In 4D spacetime, the surface of a dynamic object describes a continuous 3D hyper-surface. This hyper-surface can be implicitly defined as the minimum of an energy functional designed to optimize photo-consistency. Based on an Euler-Lagrange reformulation of the problem, we find this hyper-surface from a handful of synchronized video recordings. The resulting object geometry varies smoothly over time, and intermittently invisible object regions are correctly interpolated from previously and/or future frames.