Analyzing scripts and determining characters in expression recognition
US7561739B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2005 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | Mar 6, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/1423
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A mechanism for recognizing and inputting handwritten mathematical expressions into a computer by providing part of a multi-path framework is described. The part of the multi-path framework includes a subscript/superscript analysis and character determination component that is designed to identify subscript and superscript elements. A method for analyzing a handwritten mathematical expression includes receiving a symbols corresponding to handwritten mathematical expression input strokes, identifying subscript and/or superscript structures, and determining a character for each symbol of the set. A graph of vertexes and edges may be created based upon the set of symbols and the graph may be searched to determine optimized candidates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.