APPARATUS FOR DISCRIMINATING CONDITION OF ROAD SURFACE

• Main Authors: ISHIHARA SHIGEHIRO, HOZUMI JUNICHI, IKEMOTO NAOTAKA, FUJINAMI KENJI
• Format: Patent
• Language: English
• Published: 02.07.2004
• Edition: 7
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; METEOROLOGY; PHYSICS; SIGNALLING; TESTING; TRAFFIC CONTROL SYSTEMS

PROBLEM TO BE SOLVED: To eliminate the need for specially providing a light source for discriminating the conditions of the road surface and the need for a complicated optical system. SOLUTION: A television camera 1 is arranged in such a way that an angle θ1 formed by its optical axis O1 and the normal N to the road surface 4 may relatively become large and images an image including a prescribed region in the road surface 4. A television camera 2 is arranged in such a way that an angle θ2 formed by its optical axis O2 and the normal N of the road surface 4 may relatively become large and images an image including the image of the prescribed region in the road surface 4. On the basis of a pixel signal corresponding to the prescribed region from the television camera 1 and a pixel signal corresponding to the prescribed region from the television camera 2, the state of the road surface is distinguished. COPYRIGHT: (C)2004,JPO&NCIPI