期刊论文

Li, Zhiyang(zylee_2016@163.com)

中文

计算机辅助设计与图形学学报

1003-9775

2018

30

1

124-137

10.3724/SP.J.1089.2018.16212

国家自然科学基金(11605071) 湖南省高校科技创新团队资助项目(湘教通2014207) 中央高校基本科研业务费专项资金项目(CCNU16A05029).

本校为第一且通讯机构

针对复杂环境因素影响下场景三维重建结果难以同时获得高重建精度和高重建完整度的问题,提出一种基于空间一致生长的多视图三维重建算法.该算法对基于特征点生长的三维重建算法框架进行拓展,新增了有条件的初值矫正环节,同时对已有的生长和滤波环节进行更替和改进.首先使用SFM从输入图像中提取稀疏种子点;然后直接在固定的世界坐标系中从所有种子点出发向其邻近三维空间扩展,得到生长点的初始位置和方向,并通过优化确定生长点的最终位置和方向,在优化前和优化中根据生长点的当前位置和方向不断选取和更换最佳主、副图,提高优化质量;再利用邻域已重建点云有条件地矫正生长点的位置和方向,并以此作...

A multi-view stereo reconstruction algorithm based on homogeneous spatial expansion was proposed to overcome the difficulty of reconstructing 3D models with both high accuracy and high completeness for scenes in complex situations. It expanded the frame work of the feature expansion algorithm with a new conditional initial value rectification step. Meanwhile the existing steps were either replaced or improved. Firstly, sparse seed points were extracted by SFM method. Then they were expanded simultaneously to their nearby 3D space directly in a fixed global world coordinates system to gain init...