3D Scene Acquisition
We would like to be able to continually "scan" and reconstruct arbitrary 3D objects, people, and even entire rooms from remote locations. We want 3D video capability; while this should, in theory, be provided by existing image-based rendering techniques, the real-time application of these techniques is generally hampered by the difficulties involved in the acquisition of real-time scene-depth information and in the merging of image and range information from a multitude of camera locations. Much of the spectrum of approaches to such 3D scene extraction can be characterized along a spectrum from no-depth-range-information (but large dense set of camera images) [LEVO96], to full depth information but few camera images.
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