Method for Reconstructing Surfaces of Specular Object from Sparse Reflection Correspondences
AssigneeMitsubishi Electric Research Laboratories, Inc.
InventorsAshok Veeraraghavan, Oncel C. Tuzel, Aswin Sankaranarayanan, Amit K. Agawal
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Abstract
A point correspondence procedure is applied to a set of images of a specular object to produce sparse reflection correspondences. The set of images is subject to rotation while acquired by a camera. That is, either the camera, the environment or the object rotates. Either a linear system AΘ=0 is solved or a related second order cone program (SOCP) is solved, where Θ is a vector of local surface parameters. Gradients of the surface are obtained from the local quadric surface parameters, and the gradients are integrated to obtain normals, wherein the normals define a shape of the surface.
Claims19
A method for reconstructing a surface of an object, wherein the object has a surface that is specular, comprising the steps of:
- applying a point correspondence procedure to a set of images of the object to produce sparse reflection correspondences, wherein the set of images is subject to rotation while acquired by a camera;
- solving a linear system AΘ=0, where Θ is a vector of surface parameters, wherein the surface parameters are local and quadric;
- determining gradients of the surface from the surface parameters;
- and
- integrating the gradients to normals, wherein the normals define a shape of the surface, and wherein the applying, solving and integrating steps are performed in a processor.
Dependencies are inferred from the claim text.