摘要
针对PMVS(patch multi-view stereo)算法在三维重建过程中容易出现重建表面不够光滑和连续,某些区域与真实物体的形状有偏差,以及在片面扩展时算法的空间和时间复杂度非常高,在处理高分辨率图像时需要付出巨大的时间和空间代价等问题,提出了一种加入法向调整的PMVS改进算法,使重建出的表面在某些细节部位更加符合真实物体形状,同时通过采用多分辨率分级重建的策略在一定程度上缩短了算法的运行时间,提高了重建效率。通过实验表明了改进后的算法的准确性和高效性。
The PMVS （patch multiview stereo） algorithm is a 3D reconstruction algorithm which is based on multiview ima ges. However, the reconstruction results obtained from PMVS algorithm are generally different with the real shape of the ob ject. While PMVS algorithm requires enormous time and space costs in dealing with highresolution images. In order to solve the two problems, a method of adjusting the patch＇s unit normal vector is proposed, and a multiresolution stratified expanding tactic is adopted to reduce the time and space costs. The experiments demonstrate the effectiveness and accuracy of the improved algo rithrn.
出处
《计算机工程与设计》
CSCD
北大核心
2013年第2期730-733,共4页
Computer Engineering and Design
基金
河北省教育厅重点基金项目(ZD200911)
河北省科技支撑计划基金项目(11213518D)
关键词
三维重建
立体视觉
片面
曲率
多分辨率
3D reconstruction
multi-view stereo
patch
curvatures
multi-resolution
