High quality volume rendering with graphics processing unit
US7889902B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2007 |
| Grant date | Feb 15, 2011 |
| Priority date | — |
| Expiry date | Dec 15, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T15/08
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A technique for generating DRR (digitally reconstructed radiography) images includes dividing sample points along a ray trajectory through a 3-dimensional dataset of attenuation values into stages. Each of the stages includes a plurality of the sample points. The attenuation values are summed along the ray trajectory for each of the sample points. Intermediate summation values are computed for each of the stages along the ray trajectory and for each of the stages the attenuation values summed within a given stage are summed with a previous stage intermediate summation value calculated for a stage previous to the given stage to generate a given stage intermediate summation value. A final accumulation value being representative of a total attenuation summed along the ray trajectory is calculated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.