Guenter Doemens

A novel sensor system for 3D face scanning based on infrared coded light

In this paper we present a novel sensor system for three-dimensional face scanning applications. Its operating principle is based on active triangulation with a color coded light approach. As it is implemented in the near infrared band, the used light is invisible for human perception. Though the proposed sensor is primarily designed for face scanning and biometric applications, its performance characteristics are beneficial for technical applications as well. The acquisition of 3d data is real-time capable, provides accurate and high resolution depthmaps and shows high robustness against ambient light. Hence most of the limiting factors of other sensors for 3d and face scanning applications are eliminated, such as blinding and annoying light patterns, motion constraints and highly restricted scenarios due to ambient light constraints.

3D face scanning systems based on invisible infrared coded light

In this paper we present two new sensor systems for 3D data acquisition. Both systems are primarily designed for face scanning applications, but their performance characteristics are useful for technical applications as well. Their operating principle is based on structured light, more precisely on color coded light, implemented in the invisible near infrared spectrum. The resulting 3D data acquisition works in realtime, shows high robustness against ambient light and provides accurate high resolution depth maps. Thus, most of the limiting factors known from other face scanning systems are eliminated, such as visible annoying and blinding light patterns, motion constraints and highly restricted application scenarios due to ambient light constraints.