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Autocalibration
===============
.. highlight:: cpp
detail::focalsFromHomography
----------------------------
Tries to estimate focal lengths from the given homography under the assumption that the camera undergoes rotations around its centre only.
.. ocv:function:: void detail::focalsFromHomography(const Mat &H, double &f0, double &f1, bool &f0_ok, bool &f1_ok)
:param H: Homography.
:param f0: Estimated focal length along X axis.
:param f1: Estimated focal length along Y axis.
:param f0_ok: True, if f0 was estimated successfully, false otherwise.
:param f1_ok: True, if f1 was estimated successfully, false otherwise.
detail::estimateFocal
---------------------
Estimates focal lengths for each given camera.
.. ocv:function:: void detail::estimateFocal(const std::vector<ImageFeatures> &features, const std::vector<MatchesInfo> &pairwise_matches, std::vector<double> &focals)
:param features: Features of images.
:param pairwise_matches: Matches between all image pairs.
:param focals: Estimated focal lengths for each camera.
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