Method for constructing image database for object recognition, processing apparatus and processing program
US8340451B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2009 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | May 4, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/462
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Provided is a method for constructing an image database for object recognition, which includes a feature extraction step of extracting local descriptors from object images which are to be stored in an image database, a scalar quantization step of quantizing a numeric value indicating each dimension of each of the local descriptors into a predetermined number of bit digits, and a storing step of organizing each of the local descriptors after the quantization to be able to be searched for in the closest vicinity, giving to the local descriptor an identifier of the image from which the local descriptor has been extracted, and storing the local descriptor to which the identifiers are given in the image database. The storing step comprises extracting the local descriptors from the object images when a search query is given, scalar-quantizing each dimension, determining a local descriptor in the closest vicinity of each of the local descriptors from the image database, and storing each local descriptors so as to be able to identify one image by majority vote processing from the images including any determined local descriptor. The scalar quantization step comprises quantizing each dimens…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.