Method and system to assist 2D-3D image registration
US9240046B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2013 |
| Grant date | Jan 19, 2016 |
| Priority date | — |
| Expiry date | Mar 1, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30012
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of the invention provide a system and method that is able to automatically provide a starting point for 2D to 3D image registration, without relying on human recognition of features shown in the 2D image. This is achieved by pre-processing the 3D data to obtain synthetically generated 2D images of those parts of the 3D data volume which will be used for registration purposes. Many different synthetically generated 2D images of the or each part of the 3D volume are produced, each from a different possible viewing direction. Each of these synthetic images is then subject to a feature extraction process to extract characterizing feature data of the registration feature shown in the images. Once the feature extraction has been undertaken for each image, when registration is to be performed the real-time 2D image is processed by applying each of the sets of extracted features thereto, to try and identify which set best matches the registration features in the 2D image. For example, where a generalized Hough transform was used in the feature extraction, the R tables would be applied to the 2D image to obtain respective accumulation images. The accumulation images may then be …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.