python - 仅径向变形即可校准摄像机

Question

我正在尝试在python中使用opencv运行相机校准。我正在使用:

cv2.calibrateCamera(objpoints, imgpoints, gray.shape[::-1],None,None)

似乎对于5个失真系数来说效果很好。但是，我想尝试并在没有切向畸变并且可能只有2个径向畸变系数的情况下运行它。那可能吗？

Answer 1

我找到了答案。

对于无切向失真:

 ret, mtx, dist, rvecs, tvecs = cv2.calibrateCamera(objpoints, imgpoints, gray.shape[::-1],None, 4,None,None,cv2.CALIB_ZERO_TANGENT_DIST,
                                                   criteria = (cv2.TERM_CRITERIA_EPS + cv2.TERM_CRITERIA_MAX_ITER, 30, 2e-16))

对于仅2个径向变形系数，似乎文档建议使用4个而不是5个系数。这似乎不起作用。相反，我修复了k3参数:

ret, mtx, dist, rvecs, tvecs = cv2.calibrateCamera(objpoints, imgpoints, gray.shape[::-1],None, 4,None,None,cv2.CALIB_ZERO_TANGENT_DIST+cv2.CALIB_FIX_K3,
                                                   criteria = (cv2.TERM_CRITERIA_EPS + cv2.TERM_CRITERIA_MAX_ITER, 30, 2e-16))