Patent ID: 9082230
Filing Date: 2015-07-14
Classification: G06T

Abstract:
1. Method of estimating a quantity of light received at a point P of a virtual environment via a device, said virtual environment comprising a plurality of first points lit by a light source, wherein said method comprises: associating via said device, with each said first point of at least a part of said plurality of first points, a value representative of an average of distances separating each said first point from a plurality of first points of a neighbouring area, selecting via said device, said first points of said neighbouring area of each said first point according to: grouping via said device, each said first point with said selected first points to form a plurality of groups, an item of orientation information representative of an orientation of said group and an item of location information representative of a location of said group being associated with each said group, computing via said device, for each said group, a quantity of incident light received, determining via said device, a surface grouping at least some of said points of said virtual environment visible from a viewpoint, said surface comprising said point P, determining via said device, at least one first group contributing to lighting of said point P by reflection of said incident light received from said light source according to at least one item of occlusion information associated with said surface, said at least one first group being determined from said plurality of groups, and computing via said device, said quantity of light received at said point P from said quantity of incident light received by said at least one first group according to at least one item of reflectance information associated with said at least one first group.