The present invention relates to a device for determining the visibility distance of landscape (landscape) (visibility distance). The apparatus includes a camera (12) for capturing a scene image, and means (16) for storing said scenic image, each pixel of said scenic image, a point in the landscape corresponding to said camera and the pixel by associating the information representative of the distance between, and means (14) for obtaining the distance map, by treating the landscape image, the predetermined value in which the contrast of the pixels of the scenery image is associated with at least some adjacent pixels and means (20, 22, 24) to detect, starting from the pixels corresponding to the maximum distance until you find the contrast pixel satisfying, repeat the process to a plurality of pixels of the landscape image perform a greater or not than and means (20, 22, 24), from said distance map, a, and means (20, 22, 24) associating the pixel to the distance information.
.FIELD 1