[POSTER] Natural 3D Interaction Using a See-Through Mobile AR System

In this paper, we propose an interaction system in which the appearance of the image displayed on a mobile display is consistent with that of the real space and that enables a user to interact with virtual objects overlaid on the image using the user´s hand. The three-dimensional scene obtained by a depth camera is projected according to the user´s viewpoint position obtained by face tracking, and the see-through image whose appearance is consistent with that outside the mobile display is generated. Interaction with virtual objects is realized by using the depth information obtained by the depth camera. To move virtual objects as if they were in real space, virtual objects are rendered in the world coordinate system that is fixed to a real scene even if the mobile display moves, and the direction of gravitational force added to virtual objects is made consistent with that of the world coordinate system. The former is realized by using the ICP (Iterative Closest Point) algorithm and the latter is realized by using the information obtained by an accelerometer. Thus, natural interaction with virtual objects using the user´s hand is realized.