A depth sensitive camera is like an ordinary digital camera but each pixel also contains information about the distance to the object. Therefore, you can digitally reconstruct any object or scene in 3D, quickly and with millimeter precision. We use these cameras to capture running motion.
In contrast to traditional motion capture systems, depth cameras do not rely on physical body markers. Instead, they use a pattern of near-infrared light to perceive depth. In a way, one can say that a depth camera generates its own body markers made of light. Therefore, no special suits or body stickers need to be worn which makes running analysis with MotionMetrix very fast and easy. You just need to step on the treadmill and run and that’s it.
Most depth cameras have built-in motion tracking functionality and it works well for general purpose applications where precision and speed is less crucial. For running, however, the built-in tracking is simply not adequate. This is why MotionMetrix uses its own algorithms for 3D reconstruction and recognition of individual body segments so that the running motion can be described with the highest possible accuracy.
How accurate you may ask? Well, sufficiently accurate to compete with world-leading marker-based solutions.