CAJ | 학술논문

随着三维物体扫描仪的广泛应用,如何对扫描出来的模型进行有效、鲁棒、快速的操作已经成为当今计算机图形学中的一个热门话题.通过在扫描模型每个采样点处拟合一个二次型曲面,设计了一个鲁棒的滤波函数--三边滤波函数;应用该函数分别对模型表面上每个点的法线、曲率和位置进行滤波;通过对曲率的滤波结果进行优化,可有效地保持三维模型表面上的特征.该算法不要求已知模型中顶点之间的连接关系,并可应用于网格模型或点模型的光顺去噪处理.
수착삼유물체소묘의적엄범응용,여하대소묘출래적모형진행유효、로봉、쾌속적조작이경성위당금계산궤도형학중적일개열문화제.통과재소묘모형매개채양점처의합일개이차형곡면,설계료일개로봉적려파함수--삼변려파함수;응용해함수분별대모형표면상매개점적법선、곡솔화위치진행려파;통과대곡솔적려파결과진행우화,가유효지보지삼유모형표면상적특정.해산법불요구이지모형중정점지간적련접관계,병가응용우망격모형혹점모형적광순거조처리.
With the wide application of 3D scanning technology, how to model the target object based on the discrete scanning data in a robust and efficient way has become one of the research topics in Computer Graphics. This paper proposes a robust filter function, called trilateral filter function, to filter the noises in the domains of surface curvature, normal and position at each sample point while the local surface is fitted in a quadratic form. By optimizing the filtering result of curvature tensor, our approach is capable of preserving the feature on the target model. Since it requests no connection information between the adjacent sample points, the proposed approach is applicable to both mesh and point models.