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基于余弦调制构造M带紧支撑双正交小波 被引量:3

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摘要 作为经典两带小波的拓展,基于完全重构(PR)滤波器理论研究了任意M带小波的性质,提出了基于余弦调制的提升结构构造M带紧支撑双正交小波的新算法。与通常的非线性优化方法相比,所提出的算法需要优化的参数更少,稳定性和鲁棒性更好,且可以用离散余弦变换(DCT)的快速算法实现。数值实验结果表明,这种方法不但实现简单快捷,而且所得到的多带小波性能比现有方法有显著改进。
出处 《自然科学进展》 北大核心 2004年第2期155-160,共6页
基金 国家自然科学基金(批准号:10171109)
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