Graph-Based Registration of Partial Images of City Maps Using Geometric Hashing

In this paper, we present a novel graph-based approach for the registration of city maps. The goal is to find the best registration between a given image, which shows a small part of a city map, and stored map data. Such registration is important in fields like mobile computing for augmentation purposes. Until now, RFID tags, markers, or regular (lot grids on specially prepared maps are typically required. In this paper we propose a graph-based method to avoid the need of special maps. It creates a graph representation of a given input image and robustly finds an optimal registration using a geometric hashing technique. Our approach is translation, scale and rotation invariant, map type independent and robust against noise and missing data.