Patent ID: 8644621
Filing Date: 2014-02-04
Classification: G06F,G06K

Abstract:
1. An image processing apparatus, comprising: an extraction unit configured to extract a plurality of feature points by extracting one or more feature points from a group of images including an input image and some of reduced images obtained by reducing the input image, a decision unit configured to decide a size of a region associated with a point of the plurality of feature points based on which reduction-ratio image from the group of images the point was extracted from, for each point of the plurality of feature points, and a registration unit configured to register a relation between at least one target feature point and the one or more feature points as an index of the input image, if the one or more feature points exist within a region whose size is the decided size of the at least one target feature point, wherein the one or more feature points are feature points that have been extracted from both the reduced images with a same reduction ratio as the reduction ratio of the reduced images including the target feature point and from reduced images with a different reduction ratio from the reduced images including the target feature point, and the one or more feature points are registered together as the index of the input image.