由结构光扫描重建老北京城三维模型的实验设计  

Reconstruction of Old Peking City Based on Structured Light

作　　者：马广恩[1,2] 石若明[1] 朱凌[1] 童君[2] 

机构地区：[1]北京建筑工程学院,北京100044 [2]福建水利电力职业技术学院,福建永安366000

出　　处：《安徽电子信息职业技术学院学报》2011年第3期37-40,共4页Journal of Anhui Vocational College of Electronics & Information Technology

基　　金：北京市科技委员会基金项目<北京旧城历史空间信息数字化关键技术研究与示范>(基金号:Z090406005809011)

摘　　要：文章提出了一种可以通过结构光摄影测量获得特征点云的方法,所处理的数据来自老北京城3D重建工程。结构光扫描的明显特征是扫描得到的模型边缘部分点云几乎都丢失了,比如说房屋的顶部边缘点云。文中提出使用获取的立体像对提取出边缘特征点,并从提取出的边缘特征里面匹配得到同名像点,通过摄影测量交会解算出同名像点的坐标值,得到边缘部分的点云,从而完成对老北京城特征部分的重建。This paper raises a method that can get feature point clouds based on structure light photogrammetry.The distinguishing feature of structured light photogrammetry is that the edge part in the models,such as the edge of housetop and the intersection wall,is lost in the point cloud.Structured light photogrammetry has acquired the stereo image pair of the object,so the information of edges can be extracted from the image.After that,the corresponding image pixels are determined only from the edge extraction result.The 3D coordinates of each corresponding image pixel point pair are calculated using the functions of photogrammetry,and the edge points are acquired.

关 键 词：结构光 特征点 匹配 重建点云 

分 类 号：TN391[电子电信—物理电子学]