Patent ID: 6307968
Filing Date: 2001-10-23
Classification: G06T

Abstract:
A method of spatial manipulation of geometry data by applying a linear transform to one or more sets of geometry data describing a graphical object to produce manipulated geometry data, said method comprising the steps of:(a) compressing said geometry data of into a compressed form, said compressing including the step of transforming said data into corresponding frequency domain component data including DC-components, zero and non-zero coefficients:(b) performing multiplication and additions as part of said linear transform on the non-zero coefficients of said corresponding frequency domain component data;(c) performing an addition with a constant as part of said linear transform by adding said constant only to the DC component of said frequency domain component data;(d) decompressing said geometry data, including applying an inverse transform to said frequency domain component data, to transform said geometry data to provide said manipulated geometry data.