blue-c: a spatially immersive display and 3D video portal for telepresence
ACM SIGGRAPH 2003 Papers
Synchronization of Images from Multiple Cameras to Reconstruct a Moving Human
DS-RT '10 Proceedings of the 2010 IEEE/ACM 14th International Symposium on Distributed Simulation and Real Time Applications
Real-time dynamic 3-D object shape reconstruction and high-fidelity texture mapping for 3-D video
IEEE Transactions on Circuits and Systems for Video Technology
A combined studio production system for 3-D capturing of live action and immersive actor feedback
IEEE Transactions on Circuits and Systems for Video Technology
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In this paper we examine how closely together images to be used in 3D reconstruction are captured, when acquisition is started using a software-based trigger delivered to multiple computers on a network. In addition we compare a software triggered pull system to a push system. Synchronisation is a key component in 3D reconstruction systems and can also be one of the most problematic. In a shape-from-silhouette based system, images are captured at the same moment to ensure the position of the object is consistent in all frames. Differences in position between captured frames results in deformations such as holes and missing or extended features. By capturing images of a projected clock, we can tell with around 10ms granularity, how closely together images are captured. This gives us an indication of whether software capture triggers delivered over a network can be used for image acquisition in a 3D reconstruction system, instead of hardware synchronised capture.