基于方向重建滤波核的Splatting新算法  

A novel splatting algorithm based on directional reconstruction filter kernels

作　　者：王衡[1] 姬红兵[1] 高新波[1] 

机构地区：[1]西安电子科技大学电子工程学院,陕西西安710071

出　　处：《西安电子科技大学学报》2005年第4期532-537,共6页Journal of Xidian University

摘　　要：提出一种基于方向重建滤波核的Splatting新算法,以增强体绘制中物体的边缘.该算法基于三维数据场的梯度信息,投影时自适应地选择有方向的椭圆高斯足印函数,与传统Splatting相比,能够减小投影中的足印重叠现象,在绘制时间相比拟的条件下可更加精细地绘制出三维物体的轮廓.分别给出了平行投影和透视投影下的新Splatting算法,并对该算法在透视投影中的误差进行了分析.This paper presents a novel splatting algorithm based on directional reconstruction filter kernels to enhance the 3-D object＇s edges in volume rendering. By utilizing the gradient information in volume data set,our algorithm can adaptively select directional ellipse Gaussian footprint functions. Compared with the traditional splatting, the new splatting algorithm can decrease the overlap of footprint functions, and render more dedicate profiles of the 3-D object at the same speed. In this paper, we present the new splatting algorithm in ease parallel and perspective projections are given, and the error analysis in perspective projection. The experimental results prove our algorithm＇s effectiveness.

关 键 词：体绘制 抛雪球 重建滤波核 透视投影 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]