Interactive drawing recognition processing method and apparatus thereof
US6118897A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 22, 1999 |
| Grant date | Sep 12, 2000 |
| Priority date | — |
| Expiry date | Apr 22, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/469
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A drawing is read by a scanner to create raster data. A labeling process is executed for the data to extract a contour line for each pattern element resultant from the labeling process to produce contour line data and region data to manage, in a tree structure, information related to a circumscribed rectangle of each line segment of the contour line. When the operator picks by a pointing device a predetermined region on the screen of a display and a pair of line segments for recognition, there is retrieved region data corresponding to the specified region. After extracting contour line data associated with the retrieved region data, a center line creation process is executed according to the extracted contour line data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.