关键词: 泊车辅助, 车位线识别, 自适应Canny, Hough变换

Abstract:

This paper describes a fully-automatic method for recognizing parking lines based on a 360-degree panorama bird's eye view image which is gaining popularity in parking assist system.With the effect of illumination on the outcome of image processing in consideration,the pre-processing is operated on the image firstly.Then an adaptive Canny edge detection technology based on the image median and Hough Transform is used.Finally,utilizing the priori knowledge about the characteristics of marking lines to constrain the outcome of Hough Transform,we realize the recognition of marking lines.Experiments on the actual image show that proposed method successfully recognizes the most parking lines,and demonstrated a detection rate of 94.2%,which proves the effectiveness and robustness of the proposed method.

Key words: parking assist;parking lines recognition;adaptive Canny;Hough Transform