Accurate Photogrammetric Height measurement with Virtual Ruler:

(Crime) Scene Images are collected during the 'investigation' stage.
The 'Evidence' image/video-frame is Stereo-Matched to the Scene Images.
The original 'Evidence' camera may be missing or moved, and is not required at all. The 'Suspect' Height and other Linear measurements are accurately performed with the
Virtual RulerTM . The higher is the resolution of the 'Evidence' image, the better more accurate is the Height measurement. Since there is no need for the original undisturbed evidence camera during investigation stage, this method of Photogrammetric Height measurement is far superior to
the much less accurate, much less practical, and often impossible to perform (if cameras moved or removed), the scientifically outdated method of 'Reprojection/Superimposition’