摘要： 噪声对snake的影响很大，它的存在很容易使snake陷入局部最小，无法正常收敛到 目标的边缘。通过实验着重分析了“椒盐”噪声对snake行为的影响，从另一个角度揭示了s nake的运行机制。实验结果表明，在图像能量选用图像本身的灰度值的前提下，“椒”噪声 对snake的影响较小，而“盐”噪声对snake的影响却很大，它的存在严重阻碍了snake的正 常收敛。

关键词: 主动轮廓线, Snake, 椒盐噪声

Abstract: In active contour model, noise can make snake get trapped in local minimum, preventing snake from converging to the contour of target. In this pape r, the effects on snake due to salt & pepper noise are analyzed through a great deal of experiments, which explore the operating mechanism of snake from another view. The experiments results show that when the grays of image, instead of gra dients, is chosen as the image energy, pepper noise affect snake little, while s alt noise do so very much.

中图分类号: 

• TP391.41