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US 2011/0211729 A1Published application
Method for Generating Visual Hulls for 3D Objects as Sets of Convex Polyhedra from Polygonal Silhouettes
AssigneeMitsubishi Electric Research Laboratories, Inc.
InventorsSrikumar Ramalingam, Amit Agrawal, Yuichi Taguchi
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Abstract
A visual hull for a 3D object is generated by using a set of silhouettes extracted from a set of images. First, a set of convex polyhedra is generated as a coarse 3D model of the object. Then for each image, the convex polyhedra are refined by projecting them to the image and determining the intersections with the silhouette in the image. The visual hull of the object is represented as union of the convex polyhedra.
Claims15
A method for generating a visual hull for an object, wherein the object is three-dimensional and the method comprises the steps of:
- extracting a set of silhouettes from a set of images, wherein there is one silhouette for each image;
- generating a set of convex polyhedra as a coarse 3D model of the object;
- refining the convex polyhedra by projecting the convex polyhedra to each image and determining the intersections with the silhouette in the image;
- and
- representing the visual hull of the object as union of the convex polyhedra, wherein the steps are performed in a processor.
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