Image compensation method and apparatus
US9336569B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2013 |
| Grant date | May 10, 2016 |
| Priority date | — |
| Expiry date | Jan 24, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T3/14
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus of image compensation are provided. The method may include: calculating an overlapping position between two adjacent scannings; obtaining two images at the overlapping position of the two adjacent scannings, and calculating mutual information of the two images by using a three dimensional non-rigid registration method; and acquiring a corresponding transformational matrix when the mutual information reaches a threshold, and compensating one of the two scans which needs to be compensated by using the transformational matrix. Images at the overlapping position of two neighboring scannings can be used to find a motion law at an identical z position of the two adjacent scannings and to obtain a corresponding match factor. Thus inconsistence of images caused by a patient's movement can be compensated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.