Indoor Positioning System Using Pyramidal Beacon in Mobile Augmented Reality

This paper presents an accurate and fast indoor positioning system using beacons and a server that manages pyramidal beacons in a mobile augmented reality environment. The proposed system consists of a beacon shaped for easy recognition in the image, a detector for recognizing such a pyramidal beacon and extracting 6 degrees of freedom relative to the beacon, and a management server that manages the ID and location information of each pyramidal beacon. Because of the characteristics of the proposed method, the posture estimation including the position is also performed in the positioning. Therefore, it is possible to implement the augmented reality with a high degree of immersion and to manage a plurality of pyramidal beacons, thereby positioning them in a wide space like a large shopping mall. To manage a large number of beacons, an LED for identifying an ID exists in the center of the beacon, and the management server maps the beacon to the coordinates of the room. The positioning is performed by recognizing the pyramidal beacon through the model learned by deep learning in the mobile device, extracting 6 degrees of freedom relative to the pyramidal beacon recognized through the image-based technology, and receiving the indoor position through communication with the server. The proposed system can be applied to a user guidance service based on mobile augmented reality in a complex and wide indoor environment.