Object boundaries identified in a raster image by a user selecting positions on the raster image and then using cost functions to predict likelihood of pixels near the position being on a boundary path
US6025850A · kind A · utility
18Cited by
7References
18Claims
0Family size
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Key dates
| Filing date | Mar 28, 1997 |
| Grant date | Feb 15, 2000 |
| Priority date | — |
| Expiry date | Mar 28, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20101
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer-implemented method identifies a boundary path of an object in a displayed raster image by sampling user input to define cursor positions in the raster image and to determine tunnel width parameters corresponding to the cursor positions. The boundary path is identified by applying a cost function that evaluates pixel values of pixels the raster image within limits defined by the tunnel width parameters and determines pixels defining the boundary path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.