Map aggregation
First Claim
Patent Images
1. A method comprising the following computer-executable acts:
- automatically locating a digital image, the digital image being a candidate map of a geographic region;
automatically determining whether or not the digital image is a map of a geographic region, wherein automatically determining whether or not the digital image is a map of the geographic region comprises;
extracting text from the digital image;
comparing the extracted text with a database of known points of interest for the geographic region to locate matches between the extracted text and the known points of interest for the geographic region; and
determining whether or not there is spatial correspondence between the extracted text in the digital image and matched known points of interest, wherein the digital image is determined to be a map of the geographic region if and only if there is spatial correspondence between the extracted text in the digital image and the matched known points of interest; and
if the digital image is determined to be a map of the geographic region, automatically generating correlation data that correlates the digital image with a reference map that includes the geographic region.
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Abstract
A system described herein includes a text extractor component that extracts text from a digital image and a determiner component that automatically determines whether or not the digital image is a map of a geographic region based at least in part upon the extracted text. The system additionally includes a correlator component that generates correlation data that causes the digital image to be correlated with a portion of a reference map that pertains to the geographic region if the determiner component determines that the digital image is a map of the geographic region.
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Citations
20 Claims
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1. A method comprising the following computer-executable acts:
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automatically locating a digital image, the digital image being a candidate map of a geographic region; automatically determining whether or not the digital image is a map of a geographic region, wherein automatically determining whether or not the digital image is a map of the geographic region comprises; extracting text from the digital image; comparing the extracted text with a database of known points of interest for the geographic region to locate matches between the extracted text and the known points of interest for the geographic region; and determining whether or not there is spatial correspondence between the extracted text in the digital image and matched known points of interest, wherein the digital image is determined to be a map of the geographic region if and only if there is spatial correspondence between the extracted text in the digital image and the matched known points of interest; and if the digital image is determined to be a map of the geographic region, automatically generating correlation data that correlates the digital image with a reference map that includes the geographic region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 18)
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13. A system comprising the following computer-executable components:
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a text extractor component that extracts text from a digital image; a determiner component that automatically determines whether or not the digital image is a map of a geographic region, wherein the determiner component determines whether or not the digital image is a map of a geographic region by comparing the text extracted from the digital image with entries in a database of known points of interest in the geographic region to identify matches, and subsequently determining whether the matched text extracted from the digital image has a spatial correspondence with the known points of interest on a reference map; and a correlator component that generates correlation data that causes the digital image to be correlated with a portion of the reference map that pertains to the geographic region if the determiner component determines that the digital image is a map of the geographic region; wherein the text extractor component, the determiner component, and the correlator component are implemented on one or more processors. - View Dependent Claims (14, 15, 16, 17, 20)
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19. A computer-readable storage device comprising instructions that, when executed by a processor, cause the processor to perform acts comprising:
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receiving a digital image; extracting text from the digital image; comparing the extracted text with a database of known points of interest; if a sufficient match exists between the extracted text and contents of the database of known points of interest, analyzing a spatial correspondence between the extracted text and entries in the database of known points of interest; determining whether or not the digital image is a map of a geographic region based at least in part upon the analyzing of the spatial correspondence between the extracted text and the entries in the database of known points of interest; and if the digital image is a map of the geographic region, correlating a portion of the reference map that corresponds to the geographic region with the digital image.
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Specification