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一种基于自适应双向扩散过程的无源毫米波图像去噪与增强

Keywords: 无源毫米波成像,偏微分方程,自适应双向扩散,图像增强

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Abstract:

研究和设计了一种新型自适应双向扩散过程,对无源毫米波图像进行降噪和增强处理.根据图像的局部特征进行自适应扩散处理,在图像的同质区域进行各向同性扩散降低噪声,在图像的边缘处沿着图像边缘的切向方向进行正向扩散降低噪声,沿着图像边缘的法向方向进行反向扩散锐化边缘.通过对仿真图像和实测的91.5GHz无源毫米波图像的实验表明,该算法对无源毫米波图像有显著的降噪与增强效果.

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