Method of registration in a contraband detection system
US7738687B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2006 |
| Grant date | Jun 15, 2010 |
| Priority date | — |
| Expiry date | Apr 14, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/757
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A multi-level contraband detection system. At a first level, the system obtains volumetric information about an item under inspection. The volumetric information provides a basis for identifying suspect objects in the item under inspection and their locations. The location information is expressed in a first coordinate system relative to the device used for first level scanning. When first level scanning identifies a suspicious object, the item under inspection is passed to a second level scanner that can take further measurements on the suspicious objects. The second level machine is controlled in a second coordinate system. A translation between the two coordinate systems is obtained by registering a multi-dimensional image obtained at the first level with positioning information obtained at the second level. Registration is performed using a coarse and then a fine registration process for quick and accurate registration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.