Patent ID: 7075534
Filing Date: 2006-07-11
Classification: G06T

Abstract:
1. A method for automatically generating factored approximations for an arbitrary reflectance distribution function, comprising the steps of: (1) selecting an initial set of projections and textures wherein the initial set of projections and textures consists of (2) establishing a search space wherein the search space lies over the space of projections only and consists of the space of four-dimensional rotations; (3) searching the space for a set of optimal factors of the function wherein the searching algorithm comprises (4) building a full approximation of the function from the set of optimal factors of the function wherein the approximation of the function consists of a mathematical series of factors and each factor of the approximation of the function consists of the composition of a projection and a texture; and, (5) computing reflectance values for arbitrary viewing angles using the full approximation of the function wherein the computation of the reflectance values comprises the step of