一种保持弯曲边缘和复杂纹理的各向异性模型  

Anisotropic model of can keep curve edge and complex texture

作　　者：孙丹[1] 廖志武[1] 

机构地区：[1]四川师范大学计算机科学学院,成都610101

出　　处：《计算机应用》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)

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.

关 键 词：各向异性 步进扩散 时间累积 梯度 差分算子 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]