Towards 4D City Models!

 

Probabilistic 4D Modeling (CVPR 10)

 

Probabilistic Temporal Inference on Reconstructed 3D Scenes, Grant Schindler and Frank Dellaert, IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR), 2010


Modern structure from motion techniques are capable of building city-scale 3D reconstructions from large image collections, but have mostly ignored the problem of large- scale structural changes over time. We present a general framework for estimating temporal variables in structure from motion problems, including an unknown date for each camera and an unknown time interval for each structural element. Given a collection of images with mostly unknown or uncertain dates, we use this framework to automatically re- cover the dates of all images by reasoning probabilistically about the visibility and existence of objects in the scene. We present results on a collection of over 100 historical images of a city taken over decades of time.

 

Monday, April 26, 2010

 
 

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