摘要
Filling is an important part in pattern recognition and computer vision. In the discrete plane （grid of plane）∑<sub>2</sub>, fill means 'determination of the region D enclosed by the simple closed curve J which is given beforehand'. In other words, if the valuation of the point on the contour J is 1, we want to do a valuation for ∑<sub>2</sub> to make the valuation of the point p be 1 iff point p belongs to D.
基金
Project supported by the Science Fund of the Chinese Academy of Sciences for Young Scientists
