Patent ID: 8107681

Claim:
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 ).