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US 8,150,098 B2Granted
Grouping images by location
AssigneeEastman Kodak Company
InventorsAndrew C. Gallagher, Madirakshi Das, Alexander C. Loui, Jens C. Farmer
Life of this patent
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Abstract
A method of grouping images captured in a common location, including receiving a collection of images; classifying the images into a set of events, where each image in the collection belongs to no more than one event; analyzing background region(s) of images from each event to determine one or more features that represent the event; and comparing features from at least two events to determine which events occurred in a common location.
Claims4
A method of matching background regions between a reference image and a target image, comprising
- (a) determining the background regions for the reference image and the target image;
- (b) locating feature points in the background of the reference and target images;
- (c) matching feature points in the reference and target images;
- (d) clustering matched points in the target image into spatially compact regions in an image coordinate space to produce a set of target clusters;
- (e) clustering matched points in the reference image into spatially compact regions in the image coordinate space to produce a set of reference clusters;
- (f) finding a matching target cluster for each of the reference clusters by counting a number of matched points between target and reference clusters;
- (g) removing reference clusters based on the count of the number of matched points;
- (h) computing a match score between the reference and target images from the remaining reference clusters;
- and
- (i) using the match score to determine whether the reference and target images are captured in the same location.
7 more elements
Dependencies are inferred from the claim text.