A Fast Algorithm for GVF Snake Model

作者：TANG Ke lun TANG Yong liang ZENG Wei JIA Hai yang ZHANG Yang LIU Yan

来源：四川理工学院学报(自然科学版), 2013, (01): 21-27.

• GVF Snake Model
• Image Gravitational Field
• Difference Scheme

A research on difference scheme of image gravitational field in the GVF snake model is performed depending on the uniform stability and convergence conditions of the difference scheme.It is found that the original explicit forward difference scheme puts a strict restriction on the diffusion coefficient in the partial differential equation which decelerates the convergence speed of difference equation iteration.A new difference scheme is put forward,which has the advantage of unconditional uniform stability and convergence,and the restriction on the coefficient of partial differential equation is removed.Through increasing the value of the coefficient appropriately,the image of boundary information transmission becomes faster.Hence,iteration calculations are decreased rapidly for a given transmission range.The simulation experiments indicate that the new difference scheme be higher efficiency than the traditional one.

• 出版日期2013-2-20
• 单位四川大学