Object identification apparatus and object identification method

摘要

An object identification apparatus selects, for each partial area of an object in a registered image, a corresponding sample image from sample images based on feature quantities of the partial area, for objects in the registered image, sets a similarity of feature quantities for each partial area between objects of an identical individual and between objects of different individuals based on a similarity related to the selected sample images for each partial area, makes a discriminator learn based on the set similarity, acquires a similarity for each partial area between objects in an input image and the registered image, and determines whether the object in the input image is identical to the object in the registered image based on the acquired similarity and a result of discrimination by the discriminator.

主权项

1. An object identification apparatus comprising:
a storage unit configured to, for objects in a plurality of sample images, store feature quantities of a plurality of predetermined partial areas, and a similarity of feature quantities for each partial area between objects of an identical individual and between objects of different individuals; a selection unit configured to, for each partial area of an object in a registered image, select a corresponding sample image from the storage unit based on feature quantities of the partial area; a setting unit configured to, for objects in the registered image, set a similarity of feature quantities for each partial area between objects of an identical individual and between objects of different individuals based on a similarity related to the selected sample images for each partial area; a learning unit configured to make a discriminator learn based on the set similarity; an acquisition unit configured to acquire a similarity for each partial area between an object in an input image and the object in the registered image; and a determination unit configured to determine whether the object in the input image is identical to the object in the registered image based on the similarity acquired by the acquisition unit and a result of identification by the learned discriminator.