Accuracy Of Surface Point Detection With An 850nm Laser And Ndi Stereo Camera

The use of three-dimensional scanning techniques in the medical field has become increasingly relevant. Laser projection systems have been applied onto human skin tissue in a variety of ways, especially in navigated surgery. However, a highly accurate and portable scanning system with the ability to analyze human tissue from multiple recording directions has yet to be developed and certified as a Class I medical device. This project aims to find the ideal setup of a portable, intuitive and certified scanning system of human tissue without the need of projective equipment. The scanning tool consists of a stereo camera by Northern Digital Instruments (NDI) and an infrared laser module. This paper presents the system's ideal parameter settings while varying its accuracy when applying a laser module with wavelength of 850nm onto human tissue.