Python implementation of P3P and PnP algorithms for pose estimation and augmented reality task using april tags.

1. E. Olson, "AprilTag: A robust and flexible visual fiducial system," 2011 IEEE International Conference on Robotics and Automation, Shanghai, China, 2011, pp. 3400-3407, doi: 10.1109/ICRA.2011.5979561.
2. R. M. Haralick, C.-N. Lee, K. Ottenberg, and M. Nolle, "Review and Analysis of Solutions of the Three Point Perspective Pose Estimation Problem," International Journal of Computer Vision, vol. 13, no. 3, pp. 331-356, 1994.
3. V. Lepetit, F. Moreno-Noguer, and P. Fua, "EPnP: An Accurate O(n) Solution to the PnP Problem," International Journal of Computer Vision, vol. 81, no. 2, pp. 155-166, 2009.