关键词:可视外壳; 侧影轮廓; 线段相交; 三维重建
Robust visual hull computation method
CHENG Ming1, LOU Yin-xia1, LIU Xian-feng1, WEN Gao-jin2
(1.College of Mathematics & Computer Science, Hunan Normal University,Changsha 410006, China; 2.Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen Guangdong 518055, China)
Abstract:The traditional volumetric visual hull generating methods were not applicable to huge-volume objects due to redundant calculations. The methods based on segments intersections were sensitive to input perturbations and were hence lack of robustness. This paper represented a new algorithm for reconstructing an object’s visual hull from its silhouette. Compared with traditional methods, the approach employs the maximum overlap line segments intersection to calculate line segment intersection stably. In addition, the extraction of the border surface is more accurate. The experiments show that the approach is more accurate and the result of reconstruction approximates the real objects better. ......