用matlab写一个白化匹配滤波器
时间: 2023-09-14 08:02:33 浏览: 177
好的,以下是用Matlab实现白化匹配滤波器的代码:
首先,读取图像,并将其转换为灰度图像,然后进行白化处理:
```
% 读取图像
img = imread('test.jpg');
% 转换为灰度图像
img_gray = rgb2gray(img);
% 进行白化处理
img_white = (double(img_gray) - mean(double(img_gray(:)))) / std(double(img_gray(:)));
```
然后,设置模板并进行匹配滤波:
```
% 设置模板
template = [1 1 1; 1 -8 1; 1 1 1];
% 进行FFT变换
f_img = fft2(img_white);
f_template = fft2(template, size(img_white, 1), size(img_white, 2));
% 进行白化匹配滤波
filtered = real(ifft2(f_template .* f_img));
```
最后,将结果进行可视化处理:
```
% 对结果进行调整,并转换为图像格式
filtered = filtered(2:end-1, 2:end-1);
filtered = (filtered - min(filtered(:))) / (max(filtered(:)) - min(filtered(:)));
filtered = uint8(filtered * 255);
% 显示结果
figure;
subplot(1, 2, 1); imshow(img);
subplot(1, 2, 2); imshow(filtered);
```
这样就可以实现白化匹配滤波器的功能了。
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