The active contour model

as known as‘Snake’

is often used when one wanted to get a precise contour of an object in image processing field. The Snake algorithms known before often converge to a wrong result because they have not used the whole shape factor in the procedure of finding“minimum energy position”. This problem becomes more serious in some fast algorithms (these fast algorithms were usually obtained by decreasing the relation of Snake points). In this paper

a new active contour model based on a typical fast algorithm of Snake is proposed. Because the new algorithm considers the whole shape factor

the relationship among the Snake points is stronger than before and the reliability of computing result is improved. The effectiveness of the new algorithm is confirmed by the experiment in the end of this paper.