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在变换域中用HMT图像降噪的研究

Keywords: 降噪,隐马尔科夫树(HMT),小波变换,余弦变换(DCT).

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Abstract:

研究了HMT(隐马尔科夫树)在变换域中进行图像降噪的应用.就不同复杂程度的图像、不同类型噪声、及用不同的变换域与传统方法进行比较,得到结论变换域中的方法比在非变换域中的传统方法优越,HMT在小波域和DCT域有着近似的效果,在高斯白噪声下HMT方法是最有效的,在相关噪声下,降噪效果与图像纹理的复杂度及噪声的强度有关.

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