基于一组对应消失线的度量重建.pdfVIP

1000-9825/2004/15(05)0666 ©2004 Journal of Software 软 件 学 报 Vol.15, No.5 ∗ 基于一组对应消失线的度量重建 + 祝海江 , 吴福朝 ( 中国科学院 自动化研究所 模式识别国家重点实验室,北京 100080) Metric Reconstruction Based on One Triplet of Corresponding Vanishing Line + ZHU Hai-Jiang , WU Fu-Chao (National Laboratory of Pattern Recognition, Institute of Automation, The Chinese Academy of Sciences, Beijing 100080, China) + Corresponding author: Phn: +86-10 Fax: +86-10 E-mail: hjzhu@, Received 2003-09-08; Accepted 2004-02-05 Zhu HJ, Wu FC. Metric reconstruction based on one triplet of corresponding vanishing line. Journal of Software, 2004,15(5):666~675. /1000-9825/15/666.htm Abstract: A technique for metric reconstruction based on one triplet of corresponding vanishing line in three images is proposed in this paper. Firstly, the infinite homography is computed by using the vanishing line correspondence and the modulus constraint. Then the camera intrinsic parameters are determined linearly by using the property that the infinite homography preserves the image of the absolute conic. Finally a metric reconstruction is obtained. Experiments with simulated data as well as with real images show that the proposed method is workable and applicable in real applications. Key words: corresponding vanishing line; plane at infinity; infinite homography; camera calibration; metric reconstruction 摘 要: 提出了一种由 3 幅图像间一组对应消失线进行度量重建的方法.首先利用对应的消失线和模值约束 计算出无穷远平面的单应矩阵,然后根据无穷远平面的单应矩阵保持绝对二次曲线的像不动的性质,线性求解 摄像机内参数,最后得到度量重建.模拟实验和真实图像实验均验证了这种度量重建方法的可行性和正确性. 关键词: 对应消失线;无穷远平面;无穷远单应矩阵;摄像机标定;度量重建 中图法分类号: TP391 文献标识码: A 从图像序列重建出场景的三维结构是计算机视觉的主要目标之一. 目前,它仍然是计算机视觉领域中的研 究热点之一.根据已知信息的不同,三维场景重建主要有以下两类方法:一类是在摄像机运动参数(或称摄像机