OBJECT IDENTIFICATION DEVICE, METHOD, AND STORAGE MEDIUM

摘要

Disclosed is an object identification device and the like for reducing identification error in a reference image which presents an object that is only slightly difference from an object presented in an input image. The object identification device includes a local feature quantity matching unit for calculating geometric transformation information for transformation from a coordinate in a reference image to a corresponding coordinate in an input image, and matching a local feature quantity extracted from the reference image and a local feature quantity extracted from the input image, an input image different area determination unit for transforming the different area in the reference image on a basis of the geometric transformation information about the input image determined to be in conformity by the matching, and determining a different area in the input image corresponding to the different area in the reference image, an input image different area feature quantity extraction unit for correcting a different area in the input image, and extracting a feature quantity from the corrected different area of the input image, and a feature quantity matching unit for matching a feature quantity extracted by the input image different area feature quantity extraction unit and a feature quantity extracted from the different area in the reference image, and outputting a matching result.

主权项

1. An object identification device comprising:
a local feature quantity matching unit that calculates geometric transformation information for transformation from coordinates in a reference image to corresponding coordinates in an input image, and matches a local feature quantity extracted from the reference image and a local feature quantity extracted from the input image; an input image different area determination unit that transforms the different area in the reference image on a basis of the geometric transformation information about the input image determined to be in conformity by the matching, and determines a different area in the input image corresponding to the different area in the reference image; an input image different area feature quantity extraction unit that corrects a different area in the input image, and extracts a feature quantity from the corrected different area of the input image; and a feature quantity matching unit that matches a feature quantity extracted by the input image different area feature quantity extraction unit and a feature quantity extracted from the different area in the reference image, and outputs a matching result.