METHOD AND SYSTEM FOR MAINTAINING A DATABASE OF REFERENCE IMAGES
First Claim
Patent Images
1. A method of maintaining a database of reference images, the database including a plurality of sets of images, each set associated with one location or object;
- the method comprising the steps of;
identifying local features of each set of images;
determining distances between each local feature of each set and the local features of all other sets;
identifying discriminative features of each set of images by removing local features based on the determined distances; and
storing the discriminative features of each set of images.
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Abstract
A method and system for maintaining a database of reference images, the database including a plurality of sets of images, each set associated with one location or object. The method comprises the steps of identifying local features of each set of images; determining distances between each local feature of each set and the local features of all other sets; identifying discriminative features of each set of images by removing local features based on the determined distances; and storing the discriminative features of each set of images.
42 Citations
25 Claims
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1. A method of maintaining a database of reference images, the database including a plurality of sets of images, each set associated with one location or object;
- the method comprising the steps of;
identifying local features of each set of images; determining distances between each local feature of each set and the local features of all other sets; identifying discriminative features of each set of images by removing local features based on the determined distances; and storing the discriminative features of each set of images. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 24)
- the method comprising the steps of;
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20. A system for maintaining a database of reference images, the database including a plurality of sets of images, each set associated with one location or object;
- the system comprising;
means for identifying local features of each set of images; means for determining distances between each local feature of each set and the local features of all other sets; means for identifying discriminative features of each set of images by removing local features based on the determined distances; and means for storing the discriminative features of each set of images. - View Dependent Claims (21, 22)
- the system comprising;
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23. A data storage medium comprising code means for instructing a computing device to exercise a method of maintaining a database of reference images, the database including a plurality of sets of images, each set associated with one location or object;
- the method comprising the steps of;
identifying local features of each set of images; determining distances between each local feature of each set and the local features of all other sets; identifying discriminative features of each set of images by removing local features based on the determined distances; and storing the discriminative features of each set of images.
- the method comprising the steps of;
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25. A data storage medium comprising code means for instructing a computing device to exercise a method for image based mobile information retrieval, the method comprising the steps of:
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receiving a query image of a location or object taken by a user using a mobile device; comparing the image with reference images in the dedicated database; identifying the location or object based on a matched reference image; and transmitting information based on the identified location or object to the user.
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Specification