Accurate inter-vehicle distance measurement based on monocular camera and line laser

Abstract

Inter-vehicle distance measuring technique is widely used for Driving Assistance System (DAS) such as Adaptive Cruise Control (ACC) and Forward Collision Warning (FCW) which are useful for safety enhancement as well as driving convenience. In this paper, we propose a new method for providing accurate longitudinal inter-vehicle distance measurement by using a monocular camera and a line laser. Experimental results show that the proposed method outperforms the disparity-based method and the error in distance measurement is low enough even in nighttime as much as daytime.

Accurate object distance estimation based on frequency‐domain analysis with a stereo camera

“…2 illustrates the results of the pre-processing stage. After we apply the illumination-invariant characteristic of the chromaticity, the region of interest is reduced to nearly half of the original image size [32].…”

A Rear-End Collision Avoidance Scheme for Intelligent Transportation System

“…, dv LV FV (2) where D denotes the inter-vehicle distance, S denotes the expected inter-vehicle space, LV and FV are the speeds of the leading and trailing vehicles, respectively. Note that D here denotes the current longitudinal inter-vehicle distance measured using such as line laser [11] or wireless signal [12] while S indicates the inter-vehicle space by which the driving safety could be guaranteed considering the vehicular dynamics and braking process. The speed of the trailing vehicle FV should be known since the collision warning system has been installed on it, while the speed of the leading vehicle LV could be obtained through GPS sharing [13] or wireless communication systems.…”