Robust method to find layout similarity between two documents
US9235758B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2014 |
| Grant date | Jan 12, 2016 |
| Priority date | — |
| Expiry date | Jun 30, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30176
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Techniques for comparing documents may be provided. For example, a comparison between layouts of the documents may be performed. The comparison may include segmenting the documents into blocks, where an arrangement of blocks of a document represents a layout of the document. Once segmented, similarity metrics, such as distances, between blocks of one document and blocks of the other document may be computed. The similarity metrics may be used to match the blocks between the documents. Further, the similarity metrics between the matched blocks may be added to determine an overall similarity metric between the documents. This overall similarity metric may indicate how similar the documents may be.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.