Patent ID: 7123257
Filing Date: 2006-10-17
Classification: G06T

Abstract:
1. A method for adding coloring information to a solid model of an object, the method comprising the steps of: acquiring a solid model for forming a surface shape of the object from a set of multiple planes; and estimating coloring information at the plane, wherein said estimating step comprises the steps of: regularly arranging multiple coloring points on the plane; and calculating coloring information of the coloring point as constants in a predetermined function based on photo-image data photographed of the object illuminated by a light source and photography information of the photo-image data, and storing the calculated constants as a two-dimensional array corresponding to an arrangement of the coloring point, wherein the predetermined function comprises a lighting direction, an observation direction for photographing, and the constant as an element of the predetermined function, and wherein the predetermined function is expressed by a linear sum of a diffuse reflection component and a specular reflection component, and the constants are a diffuse reflection constant related to the diffuse reflection component and a specular reflection constant related to the specular reflection component.