In case my post got lost in the replies, a thread on how I demonstrated the Avi had the wrong altitude in his analysis of the PR043 UFO video. Basically, bad data. https://t.co/WrUJ2QeGzJ [Quoted] @ProfAviLoeb I used terrain points that were not all clustered in the bottom 25% of the screen. Your point selection was very sensitive to small changes, and impossible to get the correct altitude from. Same issue with your homography or my 3D solver. The input data is bad. https://t.co/0n2kKnEUlq