Show model and measured optical flow slopes in GUI.
calibration/cg_slopes_viewer dataset_parameters.json intrinsics.json points.json/measured_slopes.json
Displays are GUI where the modelled optical flow slopes for given feature points are shown, with adjustable (X,Y,Z)
rotation euler angles.
Feature slopes can also be given instead of feature points. Then it also displays those slopes. It can be used to manually fit the rotation such that the model matches the measurement.