学术论文

      一种快速三维重建评估算法

      A fast evaluation method for 3D reconstruction algorithm

      摘要:
      任何一种三维重建算法都必须对其优劣进行定量评估.不同的三维重建算法所采取的世界坐标系不同,所重建出的景物的大小、位置、姿态也不同,无法直接与标准库给出的精确测量值进行比对.提出了一种新的算法,利用Anders Dahl等人建立的多视点标准数据库里的摄像机投影矩阵,通过最小二乘拟合,直接估算出从算法自身的世界坐标到标准库世界坐标的变换矩阵,再稍作优化,然后统计计算重建精度和覆盖度,从而简化了评估过程.
      Abstract:
      It is essential to evaluate the performance of a 3D reconstruction algorithm.Since different coordinates are adopted by the different algorithms,the reconstructed scenes have different sizes,positions,and attitudes.As a result,they could not be compared directly with those accurately measured values provided by the standard data bases.This paper proposed a fast evaluation method.Using the projection matrixes provided by Anders Dahl's multi-view database,it extracts by least square method the transfer matrix between the coordinates used by 3D reconstruction and the data base.Following a short loop of optimization,the accuracy and coverage of the 3D reconstruction algorithm could be evaluated statistically.
      Author: CHEN Pan LI Ya-lan ZHONG Ze-hui LI Zhi-yang
      作者单位: 华中师范大学物理科学与技术学院,武汉,430070
      刊 名: 信息技术 ISTIC
      年,卷(期): 2017, (3)
      分类号: TP391
      在线出版日期: 2017年4月18日