DIERS formetric 4D is based on the principle of optical stereographic measuring and was consequently focused on the human surface and depiction of the spine.
Description
DIERS formetric 4D is based on the principle of optical stereographic measuring and was consequently focused on the human surface and depiction of the spine. Compromises, due to the constraints of industrial scanners, could thus be avoided. Contrary to simple 3D measurement methods which only detect individual measurement points on the skin, the DIERS formetric 4D performs complete shape scanning (surface measurement) of the back. This makes it possible to record even extraordinarily small changes which occur in therapeutic measures.
To avoid movement effects, the scanning times for individual images need to be very short. Scanning times of one second or longer cause inaccuracy. For that
The reason, the scanning time is set to a maximum of 40 milliseconds in the formetric system. Due to the short scanning time of the individual images, the method is able to generate scan sequences with individually selected time and image frequency.