Categorization of multi-page documents by anisotropic diffusion
US8892562B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2012 |
| Grant date | Nov 18, 2014 |
| Priority date | — |
| Expiry date | Apr 1, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/5838
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer implemented system and method are provided for refining category scores for pages of a sequence of document pages that potentially includes document boundaries. The method uses initial category scores provided by a categorizer that considers one page at a time or concatenated pairs of pages (called bipages). The category scores represent the probability that a page belongs to a particular category. The method uses anisotropic diffusion to refine the initial page category scores using the scores of neighboring pages as a function of the probability that there is a boundary between the pages. The method may be performed iteratively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.