Setup for constructing a weed map

A setup (100) for constructing a weed map independently of the time of the day, comprising an image recording unit (110;

• 110′), an image processing and evaluating unit (120), a data storage unit (130) connected to the latter, a weed database (135), a light source (160) and a position detection unit (150) having a location finding element (152), wherein the image recording unit (110;
• 110′), the position detection unit (150) and the light source (160) are all in data communication connection with the image processing and evaluating unit (120), and wherein the image processing and evaluating unit (120) is provided with one or more controlling outputs (122, 124), wherein one of the controlling outputs (124) is capable of establishing a data communication connection with the control unit (190) of a separate weeding apparatus, characterized in that
• the image recording unit (110;
• 110′) comprises a video camera (112) for recording successive images of the path traveled by the setup (100) and illuminated by the light source (160), wherein said light source (160) is at least partly provided by a light source emitting light having a colour temperature approximating the colour temperature of natural light;
• the image recording unit (110;
• 110′) further comprises a relief tracking laser camera (114) for determining topographical conditions of the path traveled;
• and
• the position detection unit (150) further comprises at least one location refining element (154) for determining more accurately the spatial ordinates supplied by the location finding element (152).