中国机械工程
中國機械工程
중국궤계공정
CHINA MECHANICAl ENGINEERING
2014年
11期
1498-1501
,共4页
宋大虎%李忠科%王忠%孙玉春
宋大虎%李忠科%王忠%孫玉春
송대호%리충과%왕충%손옥춘
点云光顺%曲率%主成分分析%特征保持
點雲光順%麯率%主成分分析%特徵保持
점운광순%곡솔%주성분분석%특정보지
point cloud smoothing%curvature%principal component analysis%feature-preserving
提出了一种特征保持的三维点云光顺去噪算法。首先对点云模型构造 kd 树结构，计算采样点的k邻域，然后把点云模型的局部几何信息，包括邻域点间距离、法向夹角、曲率等作为特征参数，根据其特征性强弱将采样点沿法向方向移动不同距离来实现点云去噪。实验结果表明，算法既能有效去除噪声，又能很好地保留原始模型的特征信息。
提齣瞭一種特徵保持的三維點雲光順去譟算法。首先對點雲模型構造 kd 樹結構，計算採樣點的k鄰域，然後把點雲模型的跼部幾何信息，包括鄰域點間距離、法嚮夾角、麯率等作為特徵參數，根據其特徵性彊弱將採樣點沿法嚮方嚮移動不同距離來實現點雲去譟。實驗結果錶明，算法既能有效去除譟聲，又能很好地保留原始模型的特徵信息。
제출료일충특정보지적삼유점운광순거조산법。수선대점운모형구조 kd 수결구，계산채양점적k린역，연후파점운모형적국부궤하신식，포괄린역점간거리、법향협각、곡솔등작위특정삼수，근거기특정성강약장채양점연법향방향이동불동거리래실현점운거조。실험결과표명，산법기능유효거제조성，우능흔호지보류원시모형적특정신식。
This paper presented a feature-preserving algorithm to smooth 3D point cloud model.It began with constructing kd tree(k-dimensional tree)of the model,then computed the k-nearest neigh-bor of sampling point.Local geometry information was defined as the feature parameters,which con-sidered the average distance,the normal angle among the point and its neighboring points,point cur-vature parameters.Then the sampling point was moved according to its characteristics and normal di-rection.Experimental results show that this method is effective to remove the noise point and pre-serve the feature of the original point cloud model.
