Visual hull with silhouette maps

초록

Visual hull is intersection of cones made by back-projections of reference images. We introduce a real-time rendering method of jaggy-free visual hull on programmable graphics hardware. Visual hull can be rendered quickly by using texture mapping approach. However, jagged artifacts are present near the edges of visual hull faces. In this paper, we solve the problem by using silhouette information. Our implementation demonstrates high-quality rendering results in real-time. Time complexity of our algorithm is O(N), where N is the number of reference images. Thus, the examples in this paper are rendered over one hundred of frames per second without jaggies. © Springer-Verlag Berlin Heidelberg 2007.