| 摘要 |
<p>The invention concerns a method for synthesis of a chart image consisting of pixels and representing a terrain flown over by an aircraft, the chart imagery being developed in each pixel from several data including, a first colour altimetric information obtained from an absolute or relative altimetric data concerning the aircraft altitude, a possible information of the presence of at least a forest zone, a second shading information representing the land topography, and a possible third colour planimetric information, the set of altimetric data forming an altimetric image and the set of planimetric data forming a planimetric image. The method comprises at least two types of mode, a normal mode wherein, in each pixel, the shading information modulates the altimetric information but not the planimetric information and an inverse mode wherein, in each pixel, the shading information modulates the planimetric information but not the altimetric information, and the chart imagery is obtained, in a normal mode from the modulated altimetric image and the planimetric image, in an inverse mode from the altimetric image and the modulated planimetric image.</p> |
