Patent ID: 6774906
Filing Date: 2004-08-10
Classification: G06T

Abstract:
A method of improving silhouette appearance in bump mapping comprising:a receiving step of receiving a triangle of a plurality of triangles; a checking vertex step of checking whether there is a vertex near silhouette in the triangle; a checking subdivision step of checking whether the triangle meets a predetermined criterion of subdivision if the result of the checking vertex step is â€œYESâ€ ; a subdividing step of subdividing the triangle if the result of the checking subdivision step is â€œYESâ€ ; a repeating step of repeating the receiving step, the checking vertex step, the checking subdivision step and the subdividing step until the triangle does not meet the predetermined criterion; a displacing step of displacing the vertex positions near silhouette along their normals according to the displacements obtained from displacement mapping if the result of the checking subdivision step is â€œNOâ€ ; and a bump mapping step of implementing bump mapping if the result of the checking vertex step is â€œNOâ€ .