EQUIPMENT FOR THE AUTOMATIC ASSESSMENT OF ROAD SIGNS AND PANELS

The invention relates to equipment for the automatic assessment of road signs and panels, said equipment performing, for said purpose, a retroreflection measurement of the white element of said signs or panels, and a measurement of the contrast between the white element of the sign or panel and a ch...

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Bibliographische Detailangaben
Hauptverfasser:	GONZALEZ ARROYO, ALVARO, BERGASA PASCUAL, LUIS MIGUEL, CALAVIA REDONDO, DAVID, FERNANDEZ ALVAREZ, RAUL, SOTELO VAZQUEZ, MIGUEL ANGEL, SANCHEZ DOMINGUEZ, FERNANDO, ABELLO GARCIA, BERNARDO, REVENGA DE TORO, PEDRO, FERNANDEZ ALCANTARILLA, PABLO, PARRA ALONSO, IGNACIO, FERNANDEZ RODRIGUEZ, JOSE PABLO, GARCIA MARQUEZ, JOSE MARIA, MORENO LOPEZ, EMILIANO, GARCIA GARRIDO, MIGUEL ANGEL, GAVILAN VELASCO, MIGUEL, FERNANDEZ LLORCA, DAVID
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CALCULATING COMPUTING COUNTING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY IMAGE DATA PROCESSING OR GENERATION, IN GENERAL OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PERFORMING OPERATIONS PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION TRANSPORTING VEHICLES IN GENERAL VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR
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Beschreibung
Zusammenfassung:	The invention relates to equipment for the automatic assessment of road signs and panels, said equipment performing, for said purpose, a retroreflection measurement of the white element of said signs or panels, and a measurement of the contrast between the white element of the sign or panel and a characteristic element of same (borders or text) in order to ensure a particular level of legibility. To this end, a vehicle (1) is equipped with a pulsed infrared illumination system (3), a system of stereoscopic cameras (2), a GPS (11), an odometer (12), a computer (5) mounted on an industrial rack, a data storage system (8), an event keyboard (7), and a TFT monitor (6) for viewing results. The infrared illumination system (3) is synchronised with the cameras (2). In this way, the infrared illuminator (3) illuminates the road area in alternate images, thereby providing illuminated road images and non-illuminated road images.