Duplicate/near duplicate detection and image registration
US9530072B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 2013 |
| Grant date | Dec 27, 2016 |
| Priority date | — |
| Expiry date | Jun 24, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F18/22
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Embodiments are disclosed for detecting duplicate and near duplicate images. An exemplary method includes receiving an original image, preparing the image for fingerprinting, and calculating an image fingerprint, the fingerprint expressed as a sequence of numbers. The method further includes comparing the image fingerprint thus obtained with a set of previously stored fingerprints obtained from a set of previously stored images, and determining if the original image is either a duplicate or a near duplicate of an image in the set if the dissimilarity between the two fingerprints is less than a defined threshold T. Once a duplicate or near duplicate is detected, various defined actions may be taken, including culling the less desirable image or referring the redundancy to a user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.