Contour extracting method and apparatus
US6404921B1 · kind B1 · utility
27Cited by
7References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 3, 1993 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | Dec 3, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T7/181
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a contour extraction apparatus and method, states of target pixels and pixels adjacent to the respective target pixels in image data are stored, the target pixel is extracted in the sequence of raster scanning, and a pixel arranging vector in the horizontal direction and in the vertical direction is detected according to the state of the target pixel and pixels adjacent to the target pixel. A state of connection between the pixel arranging vectors is determined, and a contour of the image data is extracted according to the determined state of connection between the pixel arranging vectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.