Tries to estimate focal lengths from the given homography under the assumption that the camera undergoes rotations around its centre only

[f0, f1] = cv.Estimator.focalsFromHomography(H)
[f0, f1, f0_ok, f1_ok] = cv.Estimator.focalsFromHomography(H)

Input

• H Homography, 3x3 double matrix.

Output

• f0 Estimated focal length along X axis.
• f1 Estimated focal length along Y axis.
• f0_ok True, if f0 was estimated successfully, false otherwise.
• f1_ok True, if f1 was estimated successfully, false otherwise.

References

Heung-Yeung Shum and Richard Szeliski. "Construction of of Panoramic Image Mosaics with Global and Local Alignment".