帮我写一份MATLAB的利用radon变换检测直线代码
时间: 2023-12-07 08:05:11 浏览: 109
好的,以下是MATLAB利用radon变换检测直线的代码:
1、读取图像并转化为灰度图像
```matlab
img = imread('image.png'); % 读取图像
gray_img = rgb2gray(img); % 转换为灰度图像
```
2、应用radon变换
```matlab
theta = 0:179; % 设定变换角度
[R,xp] = radon(gray_img, theta); % radon变换
```
3、寻找最大峰值
```matlab
[maxValue,columnIndex] = max(R(:)); % 找到最大峰值及其所在位置
[rowIndex, columnIndex] = ind2sub(size(R),columnIndex); % 将位置转换为行列坐标
```
4、绘制检测结果
```matlab
figure;
imshow(gray_img,[],'InitialMagnification','fit');
hold on;
x = 0:size(gray_img,2);
y = (cosd(theta(rowIndex))/-sind(theta(rowIndex)))*x + (xp(columnIndex)/sind(theta(rowIndex)));
line(y+1,x+1,'Color','r','LineWidth',2);
title(sprintf('Line Detection Using Radon Transform\nAngle = %0.1f degrees',theta(rowIndex)))
axis normal
hold off;
```
希望这份代码对您有所帮助!
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