Signal processing-image communication vol:21 issue:9 pages:709-723
Our on-line, interactive system for enhanced tele-teaching starts from a network of fixed cameras, placed around an instructor. A 'virtual' camera can move freely between these 'real' cameras. The creation of a virtual view requires on-line foreground/background segmentation and 3D reconstructions of the foreground. An off-line, user-interactive method is used for the initial 3D reconstruction of the background. An on-line update of the background model is done automatically.