Generation of document fingerprints for identification of electronic document types
US8831350B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 2011 |
| Grant date | Sep 9, 2014 |
| Priority date | — |
| Expiry date | Oct 4, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/418
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Candidate identification utilizing fingerprint identification is disclosed. The method includes receiving a candidate image comprising a plurality of constituent elements arranged in a content pattern, compensating for rotation variation in the content pattern of the received candidate, analyzing each of the plurality of constituent elements comprising the content pattern of the received candidate image to define a bounded area about each of the plurality of constituent elements, building a candidate fingerprint representative of the content pattern wherein the candidate fingerprint is based on the defined bounded area, comparing the candidate fingerprint to a plurality of fingerprints wherein each of the plurality of fingerprints represents one of a plurality of exemplars, identifying one of the plurality of fingerprints that corresponds to the candidate fingerprint, and evaluating the candidate and one or more identified exemplars to determine the best match there between, wherein the identified exemplar corresponds to the one of the plurality of fingerprints.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.