System and method of determining building numbers

摘要

A system and method is provided for automatically recognizing building numbers in street level images. In one aspect, a processor selects a street level image that is likely to be near an address of interest. The processor identifies those portions of the image that are visually similar to street numbers, and then extracts the numeric values of the characters displayed in such portions. If an extracted value corresponds with the building number of the address of interest such as being substantially equal to the address of interest, the extracted value and the image portion are displayed to a human operator. The human operator confirms, by looking at the image portion, whether the image portion appears to be a building number that matches the extracted value. If so, the processor stores a value that associates that building number with the street level image.

主权项

1. A method comprising:
selecting, by one or more processors, an image associated with a street address that includes a building number; identifying, by the one or more processors, a portion of the image containing characters associated with building numbers; extracting, by the one or more processors, an alphanumeric value from the characters within the portion of the image; comparing, by the one or more processors, the alphanumeric value to the building number of the street address; determining, by the one or more processors, a score based on the comparison of the alphanumeric value to the building number of the street address; determining whether the score meets or exceeds a first predetermined threshold; and storing, by the one or more processors, an association between the alphanumeric value and the image when the score meets or exceeds the first predetermined threshold.