Apparatus and method for detecting sheet objects in computed tomography data
US6111974A · kind A · utility
79Cited by
38References
42Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 11, 1998 |
| Grant date | Aug 29, 2000 |
| Priority date | — |
| Expiry date | Feb 11, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V2201/05
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for detecting objects in computed tomography (CT) data, including sheet-shaped objects such as sheet explosives can be detected by analyzing a neighborhood of voxels surrounding a test voxel. If the density of the test voxel is sufficiently different from the mean density of the neighboring voxels, then it is concluded that the test voxel is associated with a sheet object. A connectivity process can be applied to voxels to combine them into objects after sheets are detected to prevent sheets from being inadvertently removed from the data by erosion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.