Patent ID: 6690354
Filing Date: 2004-02-10
Classification: G06F

Abstract:
A method to reduce computation in a system that uses an array of sensors definable in (i,j,k) coordinates to detect at least two-dimensional data representing distance between the array and a region of interest definable in (x,y,z) coordinates, the region of interesting including at least one region in which a portion of a user-controlled object can interact with a portion of a virtual input device, the method including the following steps:(A) calculating and transforming from (x,y,z) coordinates into said (i,j,k) coordinates a distortion coordinate for a sub-portion of said region of interest; and (B) using distortion coordinates calculated at step (A) to determine in said (i,j,k) coordinates distance between an image portion of a target object and a portion of said region of interest.