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结合局部熵的各向异性扩散模型

, PP. 642-647

Keywords: 图像滤波,各向异性扩散,Perona-Malik模型,局部熵,偏微分方程

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Abstract:

Perona-Malik(P-M)模型是一个经典的各向异性扩散模型,该模型不能保持图像的重要细节(如纹理)。针对此问题,文中提出一个结合局部熵的各向异性扩散模型,该模型的扩散系数不仅依赖于图像梯度,也依赖于局部熵描述的局部区域信息。实验表明该模型不仅能有效去除图像噪声,更好保持图像弱边缘,而且能较好地保持图像的重要细节。

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