Patent ID: 9437039
Filing Date: 2016-09-06
CPC Classification: G06T

Claim Text:
1. A method of generating an image, said method comprising: simulating a presence of at least one light source within a virtualized three dimensional space; within said virtualized three dimensional space, defining a light sensing plane, wherein said light sensing plane comprises a matrix of a plurality of pixels to be displayed on a display screen; using a light transport procedure to compute said image, said procedure computing a gradient value for each pixel of said matrix to produce a plurality of gradient values, wherein said computing comprises: selecting a plurality of light path pairs within said virtualized three dimensional space; determining for each light path pair, a gradient contribution for a respective pixel of said matrix; and for each light path pair, updating a gradient value for said respective pixel with said gradient contribution, wherein said selecting is biased toward selecting more light paths that pass through pixels having larger gradient values.