Key value extraction from documents
US11348330B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 9, 2020 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Sep 4, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/224
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems, methods, and computer-executable instructions for extracting key value data. Optical character recognition (OCR) text of a document is received. The y-coordinate of characters are adjusted to a common y-coordinate. The rows of OCR text are tokenized into tokens based on a distance between characters. The tokens are ordered based on the x,y coordinates of the characters. The document is clustered into a cluster based on the ordered tokens and ordered tokens from other documents. Keys for the cluster are determined from the first set of documents. Each key is a token from a first set of documents. A value is assigned to each kay based on the tokens for the document, and values are assigned to each key for the other documents. The values for the document and the values for the other documents are stored in an output document.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.