如何使用opencv进行图像去畸变
时间: 2024-09-27 07:10:03 浏览: 49
在OpenCV中进行图像去畸变通常涉及到以下几个步骤:
1. **读取图像**:首先使用`cv2.imread()`函数加载包含畸变的原始图像。
```python
import cv2
image = cv2.imread('distorted_image.jpg')
```
2. **创建摄像头矩阵和Distortion coefficients**:如果你知道摄像头的内参(焦距、光心坐标等),可以手动设置。否则,可以从一个已知标定好的摄像头数据文件(`.xml`格式)中读取,这是最常见的做法。
```python
# 如果来自标定
camera_matrix, dist_coefs = cv2.readCameraMatrixFromXML('calibration.xml')
```
3. **初始化Undistorter**:创建一个`cv2.undistort()`函数的实例,传入摄像头矩阵和畸变系数。
```python
undistorter = cv2.fisheye.undistortRectifyMap(camera_matrix, dist_coefs, None, camera_matrix)
```
4. **去畸变**:调用`undistorter`函数处理输入图像,并返回校正后的图像。
```python
dst = cv2.remap(image, undistorter[0], undistorter[1], cv2.INTER_LINEAR, borderMode=cv2.BORDER_CONSTANT)
```
5. **保存结果**:如果你想保留原图的信息,可以将校正后的图像保存到新的文件。
```python
cv2.imwrite('undistorted_image.jpg', dst)
```
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