Patent ID: 9721352
Date: 2017-08-01
CPC Classifications: G06T,H04N

Claim:
1. A computer-implemented method for analyzing a video taken of a projectile launched from a gun, the method comprising: receiving a first projectile launch video recording of a projectile launched from a gun generated by a first video camera system, the first projectile launch video having a plurality of first image frames, at least a portion of the plurality of first image frames containing an expected projectile shape; receiving a second projectile launch video recording of the projectile launched from the gun generated by a second video camera system, the second video camera system being positioned at a different location from the first video camera system, the second projectile launch video having a plurality of second image frames, at least a portion of the plurality of second image frames containing an expected projectile shape; generating a first pitch history by segmenting a projectile shape in each of the first image frames of the plurality of first image frames; generating a second pitch history by segmenting a projectile shape in each of the second image frames of the plurality of second image frames; generating a first corrected pitch history by receiving first mirror rotation data corresponding with the first projectile launch video, and recording and correcting the first pitch history for skew angle and camera misalignment; generating a second corrected pitch history by receiving second minor rotation data corresponding with the second projectile launch video, and recording and correcting the second pitch history for skew angle and camera misalignment; receiving geodetic information associated with the location geometry of the first video camera system, the second video camera system, and the gun; and estimating the pitch and the yaw of the projectile based on the first corrected pitch history, the second corrected pitch history, and the geodetic information.