Disclosed are a device and a method for estimating an inter-vehicle distance. According to one embodiment of the present invention, the device for estimating an inter-vehicle distance comprises: a camera configured to photograph the surrounding region of a vehicle; a license plate recognition unit for recognizing a license plate of a peripheral vehicle from an image photographed by the camera; a license plate measurement unit for measuring the width and height of the license plate recognized by the license plate recognition unit; and a distance estimation unit for calculating a first distance between the vehicle and the peripheral vehicle by using the width measured by the license plate measurement unit and the width of an actual license plate, and calculating a second distance between the vehicle and the peripheral vehicle by using the height measured by the license plate measurement unit and the height of the actual license plate, wherein the distance measurement unit estimates the shorter distance of the first distance and the second distance as a distance between the vehicle and the peripheral vehicle. According to the present invention, the amount of calculation is minimized, and separate sensors and an excessive database are not necessary.
차간거리 추정장치 및 그 방법을 개시한다. 본 개시의 일 실시예에 의하면, 차량(vehicle)의 주변영역을 촬영하도록 구성된 카메라(camera); 카메라가 촬영한 영상화면으로부터 주변차량(peripheral vehicle)의 번호판을 인식하는 번호판 인식부(license plate recognition unit); 번호판 인식부가 인식한 번호판의 가로길이(width) 및 세로길이(height)를 측정하는 번호판 측정부(license plate measurement unit); 및 번호판 측정부가 측정한 가로길이와 실제 번호판(actual license plate)의 가로길이를 이용하여 차량과 주변차량 사이의 제1 거리(first distance)를 연산하고, 번호판 측정부가 측정한 세로길이와 실제 번호판의 세로길이를 이용하여 차량과 주변차량 사이의 제2 거리(second distance)를 연산하는 거리추정부(distance estimation unit)를 포함하되, 거리추정부는 제1 거리 및 제2 거리 중 더 짧은 거리를 차량과 주변차량 사이의 거리로 추정하는 것을 특징으로 하는 차간거리 추정장치를 제공한다.
Apparatus And Method for Estimating Inter-Vehicle Distance
차간거리 추정장치 및 그 방법
2022-02-28
Patent
Electronic Resource
Korean
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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