camera position estimation from 6-gcp 3D pose

[hcwinsemius]

Description:

• with a IP-camera with significant distortion and unprecise focal distance estimates, pose estimation from GCPs may become inprecise
• This may cause distortion or elongated parts in areas that are enlarged by the camera lens for better FOV
• Causing too large distances in areas uncovered by control points
• Hence overestimation of velocities. This needs to be tested with a set of known points and known reference such as the camera position itself with a camera that has significant distortion issues or a manipulated camera image (this would make the experiment more controlled).

Possible solution:

• automated tuning of parameters with RMSE and/or known camera position
• estimation of straight lines perspective and some kind of automated "straightening" through updating the distortion coefficients

[hcwinsemius]

https://www.researchgate.net/publication/2213546_Camera_distortion_self-calibration_using_the_plumb-line_constraint_and_minimal_Hough_entropy