Method for thresholding a gray scale matrix
US5815606A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1996 |
| Grant date | Sep 29, 1998 |
| Priority date | — |
| Expiry date | Dec 23, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for thresholding a gray scale matrix representative of an image to generate binary matrix representative of the image. Elemental features of the image are determined and characterized, and a plurality of thresholding algorithms is selected. For each algorithm a sequence of binary matrices is generated as scaling factor applied to the algorithm is varied. Features of each binary matrix are determined and characterized and compared to elemental features of the image. For each determined feature which matches a an elemental feature of the image a score is incremented; and for each determined feature which does not match the score is decremented. The binary matrix having the highest score is selected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.