| 摘要 |
<p>The invention relates to a mobile equipment for the automatic video sampling of road surface with simultaneous laser marking of two distinct cross sections of the road. According to the invention, the equipment comprises a video camera (E.V.) of the "area scan" type, namely a camera scanning at the surface or area level, the optical axis of said camera being oriented vertically, towards the surface of the pavement to be tested, the projection of the field of view (C.V.) of said video camera (E. V.) onto the surface of the road to be tested being extended along the cross direction of the road by means of an optical objective (L.A.) of the anamorphotic type which presents different values for the focal lengths of the two plane axes thereof, while the laser marking of the road to be tested is carried out by using two continuous emission laser sources (S.LI and S.LII) which are oriented vertically, towards the surface of the pavement to be tested and arranged in line, on either side of the video camera (E. V.), and equally spaced in relation thereto, each of said laser sources (S.LI and S.LII) projecting a laser beam (F.LI and FLII) normal to a horizontal plane of the road and oriented on the cross direction thereof, the two laser sources (S.LI and S.LII) being mounted at a convenient height, on a laboratory vehicle (V.L.).</p> |
