Image processing method and device using a virtual ray and vector information
US7853057B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 2, 2006 |
| Grant date | Dec 14, 2010 |
| Priority date | — |
| Expiry date | Dec 31, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/507
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A threshold value T which is a little larger than voxel values of a target tissue such as bloodstream is determined. Next, a virtual ray is projected, and voxel values on the virtual ray are obtained as an array A1 (original array). Then, an array A2 (replaced array) is generated by the voxel values of the array A1 which are equal to or larger than the threshold value T are flipped-over at the threshold value T. Then, a part of the data on the array A2, e.g., flipped-over data corresponding to the center part of the calcified region is excluded. Next, a maximum value M2 on the array A2 is obtained, and a value M1 on the array A1 corresponding to the value M2 is obtained. Then, the value M1 is employed as a pixel value for the virtual ray.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.