Patent ID: 8111261

Claim:
A method for creating an appearance of texture in a computer image comprising the steps of: introducing information into a computer from which the image is produced; for each point of the image in 3D geometric space: computing a pseudo-random hash value at each vertex of a unit cube surrounding the point of the image using six+modules and seven L modules where the L module is implement as a look-up table having 64 6 bits entries; mapping the lower six bits from last stage L modules of a plurality of stages of modules to a fixed set of 64 gradient vectors where the set is chosen such that a length of each component of every vector of the 64 vectors is a power of two; based on the gradient vectors, combining with the computer the contribution from each vertex into a single interpolated result to produce the point of the image with noise interpolated texture that do not have visible grid artifacts; and after all points of the image are obtained, displaying the image on a display.