The performances of several improved Perona-Malik anisotropic diffusion methods are compared, and an improved method making use of visual masking effect is proposed.

• 摘要该文比较了几种现有的P-M扩散系数改进算法的优缺点，提出了一种改进的基于视觉掩蔽效应的各向异性扩散平滑算法。