Semi-local active contour for a faint region detection in knee CT images
US7620226B2 · kind B2 · utility
6Cited by
0References
13Claims
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Key dates
| Filing date | Oct 25, 2005 |
| Grant date | Nov 17, 2009 |
| Priority date | — |
| Expiry date | Sep 13, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30008
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An exemplary method of detecting a structure in a three-dimensional (3D) computed tomography (“CT”) knee image is provided. An intensity prior mask is created based on a two-dimensional (2D) slice of the CT image. A seed point in the 2D slice is received or estimated. The seed point is in a Hoffa's pad region. A geometric prior mask is created based on the seed point. The intensity prior mask and the geometric mask are combined to form a region mask. A level-set contour is segmented from the 2D slice. The step of segmenting is constrained by the region mask.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.