3D Sensor

Despite a high level of robustness on the whole compared to more difficult illumination conditions, there are situations where a monocular video system, i.e. a system that works using single cameras for each measurement spot, reaches its operational limits. This almost exclusively concerns building areas with glass domed superstructures in association with heavily reflective flooring. Here during extreme weather conditions with very strong, skewed, solar radiation, people or revolving doors, a strong formation of moving shadows can be caused, which can only be partly compensated for by image evaluation algorithms. In isolated cases this can reduce the system’s accuracy.

In order to provide the highest evaluation accuracy for such situations Vitracom AG is developing a 3D stereo camera system. In addition to image information, this system supplies a spatial, three dimensional view of the scene. This way any shadows projected on the floor will be completely eliminated. Furthermore, other evaluations are possible on the basis of spatial information. For example, during measurement, people with a body size of less than a certain threshold (e.g. children under 1.20 cm) are eliminated or recorded separately.

Additionally, a three dimensional scene survey will also enable the position of people to be recorded (e.g. fallen or lying people) - see sens@home.