Browsing by Author "Milne, Phillip"

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    Visual hull surface estimation
    (2004) Milne, Phillip; Nicolls, Fred; De Jager, Gerhard
    This paper describes a technique used to approximate the surface of an object’s visual hull. The hull’s basic structure is initially represented by a partitioned 3D space using voxels. The marching cubes algorithm then assigns polygonal patches to surface voxels depending on a certain criteria. It is less computationally intensive to manipulate a few triangular patches than a number of six-faced voxels. The visual hull model is further refined by applying a binary search to the vertices of each surface that improves the positional accuracy of each vertex. The method is applied to a small plastic cat using a 5-camera system and results are shown.