Abstract
In recent years, the use of tablet terminals has spread in fieldwork. In this re-search, we focus on cameras and handwriting input functions standardized on tablet terminals. In this research, we propose a system that associates handwrit-ten information with AR (Augmented Reality) function and aims to enable smooth transmission and sharing of information. In the proposed system, a user is supposed to write attention points and/or draw figures directly on the screen-shot of the site. The handwritten information pops up automatically overlaid on the display when the same scene is view with the camera. In this system, the us-er saves handwritten contents on site and extracts and registers natural feature points from the camera image. Markerless AR can be realized by recognizing registered natural feature points and superimposing and displaying handwritten information. In this paper, assuming the scenario of inspection work for con-crete structures, we implement two types of AR indications, the indication of place and always oriented towards the user, and report on experimental display performance and effect.
