Motion-Tracking Overlay Reading Zero Confidence
What This Image Shows
A video still of the seated crowd, colour-cast blue and violet, processed through computer-vision software. Green motion-vector arrows point in various directions across the frame, coloured tracking dots sit along the chest of a young man in a white t-shirt at the centre, and a red target circle near the middle carries the label Conf: 0.0.
That label is worth reading literally. Conf is the detector's confidence score, and 0.0 means the software found nothing it could classify at that point. Motion-vector arrows in compressed video also track compression blocks rather than objects, so they scatter wherever the encoder had to work hardest. An overlay like this looks authoritative and is, on its own terms, reporting a negative result.
It is kept as part of the record of how the courtyard footage has been analysed, and as a caution about the genre: several images circulating in this thread are software output presented as findings. The video-analysis work with more substance behind it is at Mic Explosion Video Analysis and Eyewitness Mobile Video.
Related Areas
- Cluster: Ballistics and the Gun
- Section: Gun & Bullet Analysis
- All photo evidence: Photos