Methods and apparatus for position estimation

摘要

Systems, apparatus and methods disclosed herein facilitate mobile station (MS) location determination using MS captured images of known points of interest (POIs). In some embodiments, each POI is associated with a corresponding visibility map comprising a set of grid points, and a subset of the POIs may be identified from the MS captured images by matching the MS captured images of each POI in the subset with corresponding stored images. A cumulative grid point weight for a plurality of grid points in the visibility maps associated with the POIs in the subset may be computed. The cumulative grid point weight for each grid point represents the probability that the MS is located at that grid point. The location of the MS may be estimated based on the cumulative grid point weights of the plurality of grid points.

主权项

1. A processor-implemented method for estimating a position of a mobile station (MS) the method comprising:
identifying a subset of points of interest in a plurality of points of interest by matching MS captured images of each point of interest in the subset of points of interest with at least one corresponding stored image of a point of interest selected from images of the plurality of points of interest, each point of interest in the subset of points of interest being associated with a corresponding visibility map comprising a set of grid points; computing a corresponding cumulative grid point weight for each grid point based on corresponding individual grid point weights, each individual grid point weight associated with one of the points of interest in the subset of points of interest; and computing an estimated location of the MS based on the corresponding cumulative grid point weight of each grid point.