Method and apparatus for automatic determination of text line, word and character cell spatial features
US5384864A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | Apr 19, 1993 |
| Grant date | Jan 24, 1995 |
| Priority date | — |
| Expiry date | Apr 19, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An automatic character cell determining apparatus automatically determines the character cells within the text image of a document. A connected component generating means generates connected components from the pixels comprising the text image. A bounding box generating means generates a bounding box surrounding each connected component. A character cell determining means for locating character cells comprising one or more connected components comprises a vertical splaying means and a horizontal splaying means for ensuring white spaces between lines and connected components, a vertical profile means for determining the vertical positions of a line, means for splitting ligatures of two or more connected components and means for generating character cells grouping together one or more connected components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.