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自适应分数阶微分的复合双边滤波算法

DOI: 10.11834/jig.20131003

Keywords: 图像增强,纹理细节增强,分数阶微分,双边滤波,边缘保持

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Abstract:

分数阶微分的图像滤波和增强方法多数通过尝试不同的分数阶得到结果,并以固定分数阶进行纹理细节提取,这种方法对于复杂环境难以鲁棒地增强整幅图像中的纹理细节。为此,提出了一种自适应的分数阶微分的复合双边滤波算法。通过分析纹理特性,建立幅值频率非线性联合指数模型自适应选择分数阶微分阶数检测图像纹理细节,有效克服图像中纹理细节的变化;在双边滤波的框架下,引入自适应分数阶微分构建的引导图像,借助细节转移方法,确保在图像去噪的同时保持/增强纹理图像细节。实验结果表明,自适应分数阶微分的复合双边滤波算法在图像滤波、去雾、细节增强等计算机视觉应用方面具有良好的效果。

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