Occlusion registration in video-based augmented reality
VRCAI '08 Proceedings of The 7th ACM SIGGRAPH International Conference on Virtual-Reality Continuum and Its Applications in Industry
High-realistic and flexible virtual presenters
AMDO'10 Proceedings of the 6th international conference on Articulated motion and deformable objects
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Realistic rendering in real-time augmented reality applications leads one to consider physical interactions between real and virtual worlds. One of these interactions is mutual occlusions in the rendered viewpoint. This paper presents two approaches for handling occlusions when the real objects can be displaced or deformed. The first approach is model-based. It is suited for a static viewpoint and relies only on a tracked bounding volume model within which the object's silhouette is carved. The second approach is depthbased and makes it possible to change the viewpoint by exploiting a handheld stereo camera. Both approaches are devised to minimize the effect of real object tracking errors in the rendered viewpoint.