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基于多尺度边缘表示的图像增强快速算法

DOI: 10.11834/jig.2004012273

Keywords: 图像增强,多尺度,表示,快速算法,基于图像,数字图像,灰度图像,对比度,小波变换模极大值,信号

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Abstract:

低对比度结构广泛存在于各种数字图像之中,研究如何通过后期处理增强数字图像的对比度是很有意义的。灰度图像对比度的高低总是与图像灰度梯度幅值的大小相联系,受这种思想的启发,提出了一种基于图像多尺度边缘表示的,利用对信号小波变换模极大值的拉伸和Hermite插值多项式实现的图像增强快速算法。此算法可以实现对噪声的抑制和对图像中不同尺度特征的增强。数值实验结果表明,该算法增强效果明显,运算速度快,是一种实用性较强的图像对比度增强算法。

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