Safety early warning method and system based on multi-lane vehicle distance detection

• Main Authors: ZHU QUANYIN, YU KUN, ZHANG HAO, ZHANG JUNQIANG, ZHANG ZHENGWEI, GAO SHANGBING, YU YONGTAO, LI WENTING, HU XUYANG, CAI CHUANGXIN, WANG CHANGCHUN, LI SHAOFAN, CHEN HAOLIN, XIANG LIN, HAO MINGYANG
• Format: Patent
• Language: Chinese; English
• Published: 12.02.2021
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; HANDLING RECORD CARRIERS; MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; PRESENTATION OF DATA; RECOGNITION OF DATA; RECORD CARRIERS; SIGNALLING; TESTING; TRAFFIC CONTROL SYSTEMS

The invention discloses a safety early warning method and system based on multi-lane vehicle distance detection, and the method comprises the steps: obtaining the braking distance of a target vehicle,carrying out vehicle marking of a video image at a current moment in a multi-lane road in front of the target vehicle, and carrying out perspective transformation of the video image to obtain an aerial view; according to pixel points between the target vehicle position and the marked vehicle position in the horizontal direction and the vertical direction in the aerial view, obtaining the actual length between the target vehicle position and the marked vehicle position in the horizontal direction and the vertical direction in combination with the corresponding relational expression, and then obtaining the actual distance between the target vehicle and the marked vehicle; and realizing safety early warning of the target vehicle by comparing the actual distance with the braking distance of the target vehicle. Accord