Method for identifying a character in a digital image
US9836646B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2015 |
| Grant date | Dec 5, 2017 |
| Priority date | — |
| Expiry date | Feb 18, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/2528
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a method for combining a first Optical Character Recognition (OCR) and a second OCR. The first OCR is run first on an image of string of characters. Its output (first identified characters, positions of the characters and likelihood parameters of the characters) is used to generate a first graph. Segmentation points related to the positions of the first identified characters are used as input by the second OCR performing a combined segmentation and classification on the image of string of characters. The output (second identified characters, positions of the characters and likelihood parameters of the characters) of the second OCR is used to update the first graph to generate a second graph that combines the output of the first OCR with the output of the second OCR. Decision models are then used to modify the weights of paths in the second graph to generate a third graph. A best path is determined on the third graph to obtain the identification of the characters present in the image of string of characters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.