公开(公告)号：US6037949A

公开(公告)日：2000-03-14

申请号：US905434

申请日：1997-08-04

申请人： Anthony David DeRose ,  Michael Kass ,  Tien Gia Truong

发明人： Anthony David DeRose ,  Michael Kass ,  Tien Gia Truong

IPC分类号： G06T13/20 ,  G06T17/20 ,  G06T15/00

CPC分类号： G06T17/20 ,  G06T13/20 ,  G06T17/205

摘要： Methods for defining smooth scalar fields on arbitrary polygonal meshes which can be consistently carried through the subdivision process involve computing mesh vertices after subdivision to a suitable resolution and computing scalar field values at the vertices corresponding to an arbitrary smooth surface, including the limit surface. The methods allow one to define and compute the value of scalar fields over an arbitrarily dense set of points on the limit surface. Applications of these techniques in computer graphics and computer animation include: (1) the definition of pseudo-coordinates for use in parametric shading including texture mapping; (2) the assignment of smoothly varying articulation weights over the control points of a model to more efficiently define the transformation of a highly detailed object or character under specific animation controls; and (3) the assignment of smoothly varying local parameters for specifying the local behavior of dynamic or quasi-static objects or surfaces.

摘要翻译： 在通过细分过程可以一致地执行的任意多边形网格上定义平滑标量场的方法包括在细分到合适的分辨率之后计算网格顶点，并且在对应于包括极限表面的任意平滑表面的顶点处计算标量场值。 这些方法允许在极限表面上的任意密集点集合上定义和计算标量场的值。 这些技术在计算机图形学和计算机动画学中的应用包括：（1）用于参数着色的伪坐标的定义，包括纹理映射; （2）在模型的控制点上分配平滑变化的关节权重以更有效地定义在特定动画控制下的高度详细的对象或角色的变换; 和（3）分配用于指定动态或准静态物体或表面的局部行为的平滑变化的局部参数。