matlabHaar
时间: 2023-11-02 17:19:43 浏览: 50
matlabHaar是一个用于实现Haar小波变换的Matlab函数。Haar小波是一系列重新缩放的“方形”函数,它们一起形成小波族或基。小波分析类似于傅立叶分析,因为它允许根据正交基来表示区间上的目标函数。MatlabHaar函数中,首先定义了haar_dwt函数,用于进行Haar小波变换。该函数将输入的一维向量分解为低频分量和高频分量。然后,haar_dwt2D函数调用haar_dwt函数对输入的二维图像进行行列分解,得到四个频率域子图像,分别是行列都是低频、行低频列高频、行高频列低频和行列都是高频的子图像。最后,使用mat2gray函数对子图像进行灰度化处理,以便显示效果更好。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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