Multi-energy-spectrum X-ray imaging system and method of substance identification of item to be inspected by using the same
US11112528B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2017 |
| Grant date | Sep 7, 2021 |
| Priority date | — |
| Expiry date | Aug 12, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2223/423
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present disclosure discloses a method of substance identification of an item to be inspected using a multi-energy-spectrum X-ray imaging system, the method comprising: acquiring a transparency related vector consisting of transparency values of the item to be inspected in N energy regions, wherein N is greater than 2; calculating distances between the transparency related vector and transparency related vectors stored in the system consisting of N transparency mean values of multiple kinds of items with multiple thicknesses in the N energy regions; and identifying the item to be inspected as the item corresponding to the minimum distance. The present disclosure is based on a multi-energy-spectrum X-ray imaging system, and proposes a method of substance identification by analyzing the multi-energy-spectrum substance identification issue. Compared with the conventional dual-energy X-ray system, the multi-spectrum imaging can significantly improve the system's ability to identify substances in theory, especially in the field of security applications. The improvement of substance identification is important for contraband inspection, such as, drugs, explosives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.