Image search apparatus and image search method
US8560551B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2012 |
| Grant date | Oct 15, 2013 |
| Priority date | — |
| Expiry date | Feb 20, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/248
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An image search apparatus has: a dimension reducing unit for reducing dimensions of multidimensional feature data to be produced as approximate data; an approximate-data storing unit for storing the produced approximate data with corresponding to the multidimensional feature data before the dimension reduction; a search request receiving unit for receiving an identifier which identifies multidimensional feature data of a person to be searched, at least as a search key; an approximate-space searching unit for calculating distances between approximate data corresponding to the received search key, and plural approximate data stored in the approximate-data storing unit, and for arranging the distances in order of similarity; and a real-space final ranking unit for again performing a distance calculation with using the multidimensional feature data before the dimension reduction, on a group of results in which the similarity is high, and for determining final rankings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.