摘要
各向异性扩散,抑制边缘,平滑内部。但现有扩散方法不能沿着弯曲边缘进行,导致弯曲边缘和复杂纹理被模糊。基于P-M各向异性模型,提出一种新的离散方式来克服这个不足。通过考虑一个邻域内梯度的变化规律,来步进移动扩散中心,使扩散能够沿着弯曲边缘进行。通过对不同方向扩散点的累积时间的调节,以得到更好的平滑效果。最后用实验证明了算法的有效性。
The anisotropic diffusion can restrain edge and smooth internal.But existing methods of the diffusion can not proceed along the bend,lead the curve edges and complex textures to be fuzzed.Based on the P-M anisotropic model,the paper proposed a new way to overcome the defect.By considering the change rules of gradient in a neighborhood,and moving the diffusion center step by step,the diffusion can be processed along the curve edges.Through the adjustment for the accumulated time of the diffuse points of the different direction,the method can get smoother results.The effectiveness of the algorithm was proved by experiment.
出处
《计算机应用》
CSCD
北大核心
2011年第A02期119-121,132,共4页
journal of Computer Applications
基金
国家自然科学基金资助项目(60873102)
关键词
各向异性
步进扩散
时间累积
梯度
差分算子
anisotropic
stepping diffusion
time accumulation
gradient
difference operator
