| 摘要 |
The invention relates to a method for estimation of the quantity of light received at a point P (43) of a virtual environment (1) that comprises several first points lit by a light source (10), said first points forming a plurality of groups each comprising at least one first point. In order to improve the display while minimising the required calculation time, the method comprises steps for:
- estimating, for each group, the quantity of incident light received,
- estimating a surface comprising the point P (43) grouping at least some of the points of the virtual environment visible from a viewpoint (40),
- estimating at least a first group (321, 351) of said plurality of groups contributing to the lighting of said point P (43) by reflection of the incident light received from said light source (10) according to at least one item of occlusion information associated with said surface,
- estimating the quantity of light received by said point P (43) from the quantity of incident light received by said at least one first group (321, 351) according to the at least one item of reflectance information associated with said at least one first group. |
