K-NEAREST NEIGHBOR RE-RANKING
First Claim
1. A method for object retrieval and localization, comprising:
- performing, by one or more computing devices;
obtaining an initial ranking of a collection with regard to a query object;
generating a ranking of the collection with regard to each of one or more nearest neighbors to the query object as indicated by the initial ranking of the collection; and
generating a new ranking of the collection with regard to the query object according to the initial ranking and the generated rankings with regard to each of the one or more nearest neighbors.
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Abstract
Methods, apparatus, and computer-readable storage media for k-NN re-ranking. Based on retrieved images and localized objects, a k-NN re-ranking method may use the k-nearest neighbors of a query to refine query results. Given the top k retrieved images and their localized objects, each k-NN object may be used as a query to perform a search. A database image may have different ranks when using those k-nearest neighbors as queries. Accordingly, a new score for each database image may be collaboratively determined by those ranks, and re-ranking may be performed using the new scores to improve the search results. The k-NN re-ranking technique may be performed two or more times, each time on a new set of k-nearest neighbors, to further refine the search results.
32 Citations
20 Claims
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1. A method for object retrieval and localization, comprising:
performing, by one or more computing devices; obtaining an initial ranking of a collection with regard to a query object; generating a ranking of the collection with regard to each of one or more nearest neighbors to the query object as indicated by the initial ranking of the collection; and generating a new ranking of the collection with regard to the query object according to the initial ranking and the generated rankings with regard to each of the one or more nearest neighbors. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system, comprising:
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one or more processors; and a memory comprising program instructions, wherein the program instructions are executable by at least one of the one or more processors to; obtain an initial ranking of a collection with regard to a query object; generate a ranking of the collection with regard to each of one or more nearest neighbors to the query object as indicated by the initial ranking of the collection; and generate a new ranking of the collection with regard to the query object according to the initial ranking and the generated rankings with regard to each of the one or more nearest neighbors. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A non-transitory computer-readable storage medium storing program instructions, wherein the program instructions are computer-executable to implement:
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obtaining an initial ranking of a collection with regard to a query object; generating a ranking of the collection with regard to each of one or more nearest neighbors to the query object as indicated by the initial ranking of the collection; and generating a new ranking of the collection with regard to the query object according to the initial ranking and the generated rankings with regard to each of the one or more nearest neighbors. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification