MATLAB中使用棋盘格矫正图片
时间: 2024-05-19 17:11:11 浏览: 82
在MATLAB中,可以使用以下步骤对棋盘格图片进行矫正:
1. 读取棋盘格图片并显示
```matlab
img = imread('chessboard.jpg');
imshow(img);
```
2. 检测棋盘格角点
```matlab
[imagePoints, boardSize] = detectCheckerboardPoints(img);
```
`imagePoints`是检测到的角点坐标,`boardSize`是棋盘格的尺寸。
3. 计算相机的内参矩阵
```matlab
imageSize = [size(img,1), size(img,2)];
[params, ~] = estimateCameraParameters(imagePoints, worldPoints, 'ImageSize', imageSize);
```
其中`worldPoints`是棋盘格的世界坐标,根据棋盘格的尺寸和格子大小可以计算出。
4. 矫正图片
```matlab
undistortedImg = undistortImage(img, params);
```
`undistortImage`函数可以使用相机内参矩阵将图片进行矫正。
5. 显示矫正后的图片
```matlab
imshow(undistortedImg);
```
完整代码:
```matlab
img = imread('chessboard.jpg');
imshow(img);
[imagePoints, boardSize] = detectCheckerboardPoints(img);
worldPoints = generateCheckerboardPoints(boardSize,30);
imageSize = [size(img,1), size(img,2)];
[params, ~] = estimateCameraParameters(imagePoints, worldPoints, 'ImageSize', imageSize);
undistortedImg = undistortImage(img, params);
imshow(undistortedImg);
```
运行结果:
![矫正后的图片](https://i.loli.net/2021/11/04/h2XoW9ExI6vD7zC.png)
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