Patent ID: 9269183
Filing Date: 2016-02-23
CPC Classification: G06T

Claim Text:
1. A method for reducing the number of sample points tested for rendering a screen space region of an image, the method comprising: (i) constructing, by a processor, a bilinear approximation per primitive for a screen space region which is to be rendered, wherein a primitive comprises a plurality of vertices, wherein each vertex is expressed as a function of lens position, projection direction, and time, and wherein the screen space region includes a plurality of sample points; (ii) evaluating the bilinear approximation to estimate coverage of a predefined primitive against one or more sample points in the screen space region; and (iii) excluding from testing at least one sample point in the screen space region which is not covered by the predefined primitive, wherein the bilinear approximation function identifies a region which is uncovered with respect to the predefined primitive.