Vision-based Collaborative & Mobile Augmented Reality

In this paper we present a collaborative augmented reality application for mobile users. The objective is to explore an environment by multiple users. Each user communicates information about the explored area to other users. The main idea consists of tracking each user using MOBIL (MOments based BInary differences for Local description) [2] as point descriptor and calculating a recursive homography using RLS (Recursive Least Squares) [8]. This approach allows multi-user tracking for augmented reality, without need the initial position for each user.