Patent ID: 8610709
Filing Date: 2013-12-17
Classification: G06K,G06T

Abstract:
1. A method for embedding a watermark for a 3-dimensional (3D) mesh model, comprising: setting reference coordinate system using 1-ring values of all vertices of the 3D mesh model, wherein the 1-ring values correspond to the number of vertices directly connected to one vertex of the 3D mesh model; a first sorting for sorting the vertices in a predetermined order based on a size of a distance from a center point of the reference coordinate system; embedding bit-information of the watermark by changing the order of index values of the vertices of polygonal face of the 3D mesh model according to the order of the vertices sorted at the first sorting, wherein the bit-information consists of bit string; and a second sorting for re-sorting the vertices sorted at the first sorting in the original order, wherein the 3D mesh model is triangle-based mesh model, and the polygonal face is a triangular face.