Mobile Augmented Reality System for Craftsmen

A mobile augmented reality system for visual guidance of craftsmen is presented. The integrated pico-projector displays constructional information within the workers field of vision. It displays borehole locations in correct world pose and helps workers aligning a drill perpendicular to a wall. To create assisting images using coordinate transformation, rtab-SLAM and camera-projector calibration determine the relative pose between the environment and the projector. To evaluate the systems usability, a user study was performed on drill aligning. It proves that the system increases task performance speed, improving accuracy in horizontal movements but indifferent in vertical movements compared to unassisted performances.