In this paper, a drawing algorithm of contour lines with inner boundary constraints is obtained by the inner boundary curves of contour lines generated by using four-pointmethod.
利用四点格式生成等值线图的内边界曲线，给出了带内边界约束条件的等值线图的绘制算法。
2
The equation of four probes method for resistivity measurement requires point contacts and a definite configuration of probes array.
测量电阻率的四探针法公式中，要求是点接触而且探针的排列有一定的形状。
3
In this thesis, we will investigate subdivision method and its application, including construction of four-point wavelets, generation of sharp features and quadrics.