Method of recognizing one or more irradiation
US5651042A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 2, 1996 |
| Grant date | Jul 22, 1997 |
| Priority date | — |
| Expiry date | May 2, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30004
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Radiologists may protect their subjects against unnecessary exposure to X-rays by use of X-ray opaque material. They may also use X-ray opaque material to permit multiple exposures on a single image. The resulting image contains relatively unexposed regions resulting from the shadow cast by the X-ray opaque material. This invention discloses a method for the automatic determination of the location of the boundary between multiple exposures and the boundary between signal and shadow regions within each exposure. Many hypotheses as to the location of such boundaries are generated and the final decision as to the correct hypothesis is contingent on the results of a rule-based reasoning network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.