双目相机标定python
时间: 2024-01-03 17:23:06 浏览: 172
相机标定程序-基于Python和OpenCV实现单目相机标定和双目相机标定源码.zip
双目相机标定是指通过对双目相机的内外参数进行估计,从而实现双目视觉系统的准确测量和三维重建。在Python中,可以使用OpenCV库来进行双目相机标定。
下面是一个使用OpenCV进行双目相机标定的示例代码:
```python
import numpy as np
import cv2
# 定义棋盘格的行列数
rows = 9
cols = 6
# 创建棋盘格角点的坐标
objp = np.zeros((rows * cols, 3), np.float32)
objp[:, :2] = np.mgrid[0:cols, 0:rows].T.reshape(-1, 2)
# 存储棋盘格角点的世界坐标和图像坐标
objpoints = [] # 世界坐标系中的三维点
imgpoints_left = [] # 左相机图像坐标系中的二维点
imgpoints_right = [] # 右相机图像坐标系中的二维点
# 读取左右相机的图像
left_img = cv2.imread('left.jpg')
right_img = cv2.imread('right.jpg')
# 将图像转换为灰度图
gray_left = cv2.cvtColor(left_img, cv2.COLOR_BGR2GRAY)
gray_right = cv2.cvtColor(right_img, cv2.COLOR_BGR2GRAY)
# 查找棋盘格角点
ret_left, corners_left = cv2.findChessboardCorners(gray_left, (cols, rows), None)
ret_right, corners_right = cv2.findChessboardCorners(gray_right, (cols, rows), None)
# 如果找到了棋盘格角点,则将其添加到对应的列表中
if ret_left and ret_right:
objpoints.append(objp)
imgpoints_left.append(corners_left)
imgpoints_right.append(corners_right)
# 进行双目相机标定
ret, mtx_left, dist_left, rvecs_left, tvecs_left, mtx_right, dist_right, rvecs_right, tvecs_right, E, F = cv2.stereoCalibrate(
objpoints, imgpoints_left, imgpoints_right, gray_left.shape[::-1], None, None, None, None, flags=cv2.CALIB_FIX_INTRINSIC)
# 打印标定结果
print("左相机内参数矩阵:")
print(mtx_left)
print("左相机畸变系数:")
print(dist_left)
print("右相机内参数矩阵:")
print(mtx_right)
print("右相机畸变系数:")
print(dist_right)
print("旋转矩阵:")
print(R)
print("平移矩阵:")
print(T)
# 保存标定结果
np.savez('calibration.npz', mtx_left=mtx_left, dist_left=dist_left, mtx_right=mtx_right, dist_right=dist_right, R=R, T=T)
# 校正图像
left_map1, left_map2 = cv2.initUndistortRectifyMap(mtx_left, dist_left, R, mtx_left, gray_left.shape[::-1], cv2.CV_16SC2)
right_map1, right_map2 = cv2.initUndistortRectifyMap(mtx_right, dist_right, R, mtx_right, gray_right.shape[::-1], cv2.CV_16SC2)
left_rectified = cv2.remap(gray_left, left_map1, left_map2, cv2.INTER_LINEAR)
right_rectified = cv2.remap(gray_right, right_map1, right_map2, cv2.INTER_LINEAR)
# 显示校正后的图像
cv2.imshow('Left Rectified', left_rectified)
cv2.imshow('Right Rectified', right_rectified)
cv2.waitKey(0)
cv2.destroyAllWindows()
```
请注意,上述代码中的`left.jpg`和`right.jpg`是左右相机的图像文件路径,你需要将其替换为你自己的图像文件路径。
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