In two - dimensional space , the sibson coordinate value is the ratio between the areas of voronoi cells , and the voronoi cell is made up of the perpendicular bisector of triangles 在二维空间中sibson局部坐标值是voronoi单元的面积之比, voronoi单元是由三角划分得到的三角形的中垂线相交构成,计算简单直观。