Method of and apparatus for extracting dotted line, and storage medium thereof
US6556701B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1999 |
| Grant date | Apr 29, 2003 |
| Priority date | — |
| Expiry date | Oct 20, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed are a method of and an apparatus for extracting a dotted line from an binary image of a document, and a storage medium thereof. The isolated points are extracted from the binary image. The isolated points configuring a candidate of the dotted line are extracted based on a positional relationship between the extracted isolated points. A validity of the isolated points configuring the candidate of the dotted line is checked. The dotted line from a positional relationship between groups of the extracted isolated points of the candidate of the dotted line. The dotted line can be thereby precisely extracted even if some isolated points are lost due to an. under-density of the image etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.