Rapid road cross section measuring method and device based on laser projection

• Main Authors: FANG LEI, ZHANG SHAOCHENG, DU SHIKANG
• Format: Patent
• Language: Chinese; English
• Published: 16.04.2019
• Subjects: GYROSCOPIC INSTRUMENTS; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; SURVEYING; TESTING

The invention provides a rapid road cross section measuring method and device based on laser projection. The method comprises the following steps: a carrier vehicle acquires a projection image of a laser line on a road surface in real time through a high-speed camera in a road driving process, and a close-range photogrammetry principle is used for resolving the image to obtain position informationof the laser projection line at the current moment relative to a carrier; and absolute parameter information of a measured road cross section is obtained through calculation according to a position and an attitude angle of the carrier, measured by a GNSS. The device comprises the carrier, a laser emitter, the high-speed wide-angle camera, the GNSS and a vehicle-mounted computer. The manual point-by-point measurement is not needed, so that errors caused by human factors are avoided; a vehicle-mounted system is higher in operation efficiency, good in continuity, relatively low in system equipment cost, simple in struct