一种基于虚拟实景空间的测量与定位方法  

A measurement and location method for image-based virtual space

作　　者：段瑞青[1] 余烨[1] 刘晓平[1] 

机构地区：[1]合肥工业大学计算机与信息学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2012年第6期753-756,819,共5页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(61070124);中央高校基本科研业务费专项资金资助项目(2010HGZY0001);安徽省自然科学基金资助项目(11040606Q43)

摘　　要：为了增强测量与定位操作的直观性和方便性,文章提出了基于虚拟实景空间的测量与定位方法。首先将二维屏幕坐标转换为对应的单幅图像坐标,基于约束条件,利用单目视觉技术得到摄像机坐标系坐标,实现3种情况下的边长测量;已知前后位置的经纬度值,确定摄像机前进方向,利用摄像机坐标系坐标经计算得到目标的经纬度值,实现目标的定位。实验结果表明,该方法可以对物体进行有效的测量和定位,满足实际应用要求。A measurement and location method for image-based virtual space is proposed in order to en- hance the intuition and convenience of measurement and location operation. Two-dimensional screen coordinates are converted to single image coordinates, and the camera coordinates are calculated by monocular vision technology based on the constraints so as to measure the edges in three cases. The latitude and longitude values of the positions before and after are obtained to fix the forward direction of camera, then the latitude and longitude values of the target are calculated by camera coordinates to locate the target. Experimental results show that the method is effective in measuring and locating ob- jects and suitable for application.

关 键 词：虚拟实景空间 摄像机坐标系 单目视觉 经纬度 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]