in this paper a new property of the Hough transform is discovered, namely an inherent probabilistic aspect which is independent of the input image and embedded in the transformation process from the image space to the...in this paper a new property of the Hough transform is discovered, namely an inherent probabilistic aspect which is independent of the input image and embedded in the transformation process from the image space to the parameter space. It is shown that such a probabilistic aspect has a wide range of implica tions concerning the specification of implementation schemes and the performance of Hough transform. In particular, it is shown that in order to make the Hough transform really meaningful, an appropriate curve (surface) density function must be, either explicitly or implicitly, supplied during its implementation processi and that the widely used approach to uniformly discretizing parameter space in the literature is generally inadequate.展开更多
针对多数研究中车道线检测的准确性和实时性难以有效平衡的问题,提出了一种应用区域划分的车道线识别方法。首先通过改进的大津(OTSU)算法提取边缘图像,再在所得边缘图像的基础上,利用改进的概率霍夫变换(PPHT)提取车道标识线上的特征点...针对多数研究中车道线检测的准确性和实时性难以有效平衡的问题,提出了一种应用区域划分的车道线识别方法。首先通过改进的大津(OTSU)算法提取边缘图像,再在所得边缘图像的基础上,利用改进的概率霍夫变换(PPHT)提取车道标识线上的特征点,并采用最小二乘法(LSM)对特征点点集进行直线拟合,最后通过提出的路面干扰线规避算法检测所有拟合得到的直线段并筛选可能的车道线。在实验方面,引入三种算法作为对比,并利用提出的准确性评价模型对500幅典型道路场景图中的车道线识别结果进行评估,同时统计在处理一段长为1 min 26 s的道路视频时每帧图像序列的平均耗时。实验结果表明所提算法的查准率、查全率、F量测值均优于对比算法,且达到实时处理的要求。展开更多
基金National Natural Science Foundation of China the '863' National Hi-Tech Development Program
文摘in this paper a new property of the Hough transform is discovered, namely an inherent probabilistic aspect which is independent of the input image and embedded in the transformation process from the image space to the parameter space. It is shown that such a probabilistic aspect has a wide range of implica tions concerning the specification of implementation schemes and the performance of Hough transform. In particular, it is shown that in order to make the Hough transform really meaningful, an appropriate curve (surface) density function must be, either explicitly or implicitly, supplied during its implementation processi and that the widely used approach to uniformly discretizing parameter space in the literature is generally inadequate.
文摘针对多数研究中车道线检测的准确性和实时性难以有效平衡的问题,提出了一种应用区域划分的车道线识别方法。首先通过改进的大津(OTSU)算法提取边缘图像,再在所得边缘图像的基础上,利用改进的概率霍夫变换(PPHT)提取车道标识线上的特征点,并采用最小二乘法(LSM)对特征点点集进行直线拟合,最后通过提出的路面干扰线规避算法检测所有拟合得到的直线段并筛选可能的车道线。在实验方面,引入三种算法作为对比,并利用提出的准确性评价模型对500幅典型道路场景图中的车道线识别结果进行评估,同时统计在处理一段长为1 min 26 s的道路视频时每帧图像序列的平均耗时。实验结果表明所提算法的查准率、查全率、F量测值均优于对比算法,且达到实时处理的要求。
基金The National Natural Science Foundation of China(No.50805023)the Science and Technology Support Program of Jiangsu Province(No.BE2008081)+1 种基金the Research and Innovation Project for College Graduates of Jiangsu Province(No.CXZZ13_0086)Scientific Research Foundation of Graduate School of Southeast University(No.YBJJ1401)