Patent ID: 8949021
Filing Date: 2015-02-03
Classification: G01C,G06F,G09B

Abstract:
1. A method of processing probe trace data to determine a measure of correlation of a probe trace with other probe traces, wherein each probe trace represents travel by a user through a geographic region, the method comprising: obtaining, by a processor, a map comprising a plurality of pixels, wherein each pixel represents a portion of the geographic region and is assigned at least one correlation value, the at least one correlation value for a pixel of the plurality of pixels being representative of at least a number of probe traces assigned to the pixel; and obtaining, by a processor, a probe trace; determining a correlation score for the probe trace by mapping the probe trace to at least one pixel of the map; determining the correlation score for the probe trace from the at least one correlation value of the at least one pixel to which the probe trace is mapped; and generating or amending, by a processor, a digital map using the obtained probe trace based on the determined correlation score for the probe trace.