| 摘要 |
A method and device for rendering a participating media delimited by a bounding box and rendered from a viewpoint, the media being at a determined distance from the viewpoint according to a viewing direction. In order to represent the limits of the participating media, the method comprises for at least one point of the volume formed by the bounding box, estimating a set of directions having for origin the at least one point; for each direction, estimating a first intersection point, corresponding to the intersection between the direction and the participating media, for which the associated density value is greater than a first threshold value; and estimating third intersection points, corresponding to the intersections between the viewing direction and the participating media, from an item of information representative of distances separating the first intersection point from a second intersection point corresponding to the intersection between the direction and the bounding box for each direction of the at least one part of the set of estimated directions. |
