METHOD OF THREE-DIMENSIONAL REPRESENTATION OF A SCENE

摘要

The general field of the invention is that of methods of three-dimensional synthetic representation of a terrain. These methods are implemented in a vehicle piloting and navigation aid system. The method according to the invention comprises the following steps:
Step 1: Computation, for a determined position of the vehicle, of a first part or of the entirety of the terrain seen through the viewing system;Step 2: Computation, for the said terrain portion, of the curvature of the said terrain at each point;Step 3: Computation, as a function of the position and of the orientation of the carrier, of the position of the displayed points;Step 4: Computation of the luminance of each point of the said visible terrain portion according to a determined law, dependent on the said curvature;Step 5: Display by the viewing system of the luminance of each point.

主权项

1. A method of three-dimensional synthetic representation of a terrain, the said method being implemented in a vehicle piloting and navigation aid system, the said aid system comprising at least one navigation system, a cartographic database and a viewing system allowing the display of synthetic images, wherein said method comprises the following steps:
Step 1: Computation, for a determined position of the vehicle, of the terrain portion seen through the viewing system; Step 2: Computation, for the terrain portion determined in the previous step, of the curvature of the said terrain at each point, the curvature corresponding to a variation of orientation of the terrain; Step 3: Computation, as a function of the position and of the orientation of the vehicle, of the position on the screen of the points for the said position of the carrier and for the said visible terrain portion; Step 4: Computation of the luminance of each point of the said visible terrain portion according to a determined law, dependent at least on the said curvature; Step 5: Display by the viewing system of the luminance of each point.