采用平面-空间颜色局部一致性的点云模型描述  

A Point Cloud Representation Using Plane-Space-Local-Area-Color-Consistency

作　　者：黄初华[1,2] 鲁东明[1,3] 刁常宇[3] 

机构地区：[1]浙江大学计算机科学与技术学院,杭州310027 [2]贵州大学计算机科学与技术学院,贵阳550025 [3]浙江大学文化遗产研究院,杭州310058

出　　处：《计算机辅助设计与图形学学报》2014年第8期1297-1303,共7页Journal of Computer-Aided Design & Computer Graphics

基　　金：国家科技支撑计划(2012BAH03F02);国家社会科学基金重大招标项目(12&ZD232);中央高校基本科研业务费专项资金(2012X22X003-3)

摘　　要：为了避免在建模过程中对动态模型进行网格化处理和纹理映射,获得较高的建模速度及良好的模型外观,提出一种基于点云模型的动态物体模型重建方法.通过分水岭分割原理进行图像分割并提取分水岭轮廓;然后采用剪影轮廓序列建模方法重建物体的稀疏点云模型;最后根据平面-空间颜色局部一致性原理扩充模型,获得稠密点云模型.实验结果表明,该方法能够快速生成紧致性描述且具有外观表象的三维模型.In order to avoid meshing the dynamic three-dimensional model and mapping texture during the reconstruction of the dynamic object,and then acquire higher reconstruction speed as well as better surface appearance,we present a reconstruction method for dynamic object based on the fact of the plane-space-local-area-color-consistency.First,image segmentation for the every video frame is implemented and then the watershed contours are extracted.Next,the sparse point cloud is computed using the shape-from-silhouettes.Finally,the compact and colored point cloud is attained efficiently based on the plane-space-local-area-color-consistency.Experimental results demonstrate that the new approach can attain the promise.

关 键 词：三维建模 可视化外壳 点云模型 分水岭轮廓 平面-空间颜色局部一致性 

分 类 号：TP315[自动化与计算机技术—计算机软件与理论]