Collation apparatus and method for the same, and image searching apparatus and method for the same

摘要

A collation apparatus that collates an input image with registered images includes: a feature extracting unit extracting feature quantities from a region of an object in the input image; a calculating unit calculating, per each of the feature quantities, similarity degrees between the feature quantities extracted from the input image and corresponding feature quantities of the registered image, for each of the registered images; an integrating unit integrating, using a parameter, the similarity degrees for the feature quantities; an estimation unit estimating as to whether or not the object in the input image is identical with an object in each of the registered images; and a parameter learning unit learning the parameters to be used by the integrating unit, based on an estimation result of the estimation unit and the similarity degree integrated by the integrating unit.

主权项

1. A collation apparatus for collating an input image with a plurality of registered images comprising:
a processor; and a memory having stored thereon instructions that when executed by the processor, cause the processor to: extract a plurality of feature quantities from a region of an object in the input image; calculate, per each of the feature quantities, a plurality of similarity degrees between the plurality of feature quantities extracted from the input image and a corresponding plurality of feature quantities of a registered image among the plurality of registered images; integrate, using a parameter, the plurality of similarity degrees corresponding to the plurality of feature quantities into an integrated similarity degree; estimate as to whether the object in the input image is identical with an object in each of the plurality of registered images; and learn the parameter to be used to integrate the plurality of similarity degrees, based on a result of the estimation by the estimation unit and the integrated similarity degree.