Patent ID: 9412020
Filing Date: 2016-08-09
CPC Classification: G06F,G06K

Claim Text:
1. A method of analyzing digital images comprising: extracting features from a first image and a second image; quantizing the extracted features by creating a feature vector; comparing the feature vectors of the first image with the feature vectors of the second image to determine matching pairs of feature vectors performing geometric coding to encode the relative spatial positions of the feature vectors, wherein performing geometric coding comprises forming a geo-map of the first image and a geo-map of the second image; performing spatial verification of one or more matching pairs of feature vectors using the determined relative spatial positions of the feature vectors, wherein performing spatial verification of one or more matching pairs of feature vectors comprises comparing the geo-map of the first image to the geo-map of the second image; removing false matching pairs of feature vectors between the first image and the second image based on the spatial verification; and comparing the remaining matching pairs of feature vectors to determine if the first image is the same as the second image.