Patent ID: 7680296
Filing Date: 2010-03-16
Classification: G06T

Abstract:
1. An information embedding device, comprising: an extracting unit operable to extract information of vertices constituting a polygon, the information of the vertices being extracted from vector data including information of the polygon; and an information embedding unit operable, utilizing the information of the vertices extracted by said extracting unit, to embed embedment information into the vector data in a robust manner against a rotating operation of the vector data, wherein said information embedding unit changes a number of points that exist on sides of the polygon in a manner such that a remainder value and a value M of the embedment information have a fixed correspondence, the remainder value being a remainder of a division of the number of points existing on the sides of the polygon by a constant number N, wherein the constant number N is an integer not less than a value of 2 and the value M is a non-negative integer less than the constant number N.