计算机科学 ›› 2020, Vol. 47 ›› Issue (7): 97-102.doi: 10.11896/jsjkx.190900011
张善彬1, 袁金钊1, 陈辉1, 王玉荣1, 王杰1, 屠长河2
ZHANG Shan-bin1, YUAN Jin-zhao1, CHEN Hui1, WANG Yu-rong1, WANG Jie1, TU Chang-he2
摘要: 车辆自定位是自动驾驶及高级辅助驾驶的关键技术之一,快速准确的车辆自定位可及时为导航或智能驾驶系统提供自车位置信息。针对自动驾驶和高级辅助驾驶领域中复杂环境下的车辆定位问题,提出了一种基于标准路牌的车辆自定位方法。设计了一个包含标准路牌的简易数据库,该数据库中预存标准路牌的字符、尺寸和控制点坐标等信息。通过车载单目相机采集包含标准路牌的视频流图像,提取标识区域质心坐标为控制点,计算每一帧视频流图像与数据库基准图像之间的平面投影变换矩阵,采用运动约束和矩阵分解求取车载相机的稳定位置。在真实道路环境中对该方法进行实验测试,结果表明,所提方法在30m以内定位精度可以达到0.1m,在20m以内时定位精度可以达到0.05m。该方法成本低、简单可靠,可利用车载单目相机与标准路牌实现车辆在复杂交通路段的精准自定位。
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