摘要： 根据自然界中物体纹理的空间方向性,提出一种三维矢量场建模方法。采用纹理的空间分布特征设计深度场,在深度场的各等值面上描绘纹理走向,通过矢量积运算完成三维矢量场的建模,使用拉普拉斯算法对三维矢量场进行平滑处理,并利用流线追踪算法对第2个矢量方向进行可视化操作。用生成的矢量场引导血管体纹理样本在三维空间中进行合成,实验结果验证了该算法的可行性。

关键词: 三维矢量场, 深度场, 拉普拉斯算法, 纹理样本, 可视化

Abstract: Aiming at the nature solid texture has the characteristic of spatial orientation,a 3D vector field modeling method is presented.This paper defines a depth field according to the spatial distribution characteristics of the texture,and draws texture directions on contour surface of the depth field.It uses the vector product operation to achieve the modeling of volumetric vector field.Laplacian algorithm is performed to make smoothing processing of 3D vector field.To realize the visibility of the second vector,the streamline tracking algorithm is used.The feasibility of the presented method is demonstrated by successfully guiding vascular solid texture examples to synthesize on the 3D space.

Key words: 3D vector field, depth field, Laplacian algorithm, texture sample, visualization

中图分类号: 

• TP317.4