COLLABORATIVE CREATION OF INDOOR MAPS

摘要

This disclosure provides techniques for the creation of maps of indoor spaces. In these techniques, an individual or a team with no mapping or cartography expertise can contribute to the creation of maps of buildings, campuses or cities. An indoor location system can track the location of contributors in the building. As they walk through indoor spaces, an application may automatically create a map based on data from motion sensors by both tracking the location of the contributors and also inferring building features such as hallways, stairways, and elevators based on the tracked contributors' motions as they move through a structure. With these techniques, the process of mapping buildings can be crowd sourced to a large number of contributors, making the indoor mapping process efficient and easy to scale up.

主权项

1. A computer-implemented method for generating a building map of an indoor space, the method comprising:
collecting sensor data via an electronic network from each computing device among a plurality of computing devices; estimating a location of each computing device; determining motions of each computing device; generating a plurality of graphical maps of one or more building features associated with the indoor space, each graphical map among the plurality of graphical maps being based on the location and the motions for each computing device; correcting the plurality of graphical maps based on one or more constraints related to the indoor space to create a plurality of corrected graphical maps; and merging the plurality of corrected graphical maps to generate the building map, the merging being based on a correlation between the one or more building features in the plurality of graphical maps.