Fast rendering of quadrics and marking of silhouettes thereof
US10529119B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2017 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Dec 12, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG16H40/63
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Described embodiments include an apparatus that includes a display, including a screen, and a processor. The processor is configured to define a bounding region on the screen. The processor is further configured to render a quadric, which is defined in a parameter space, over a three-dimensional electroanatomical map of a surface of a heart that is displayed on the screen, by, for each pixel in the bounding region, transforming, to the parameter space, a virtual ray that passes through the pixel, and ascertaining whether a point of intersection between the transformed virtual ray and the quadric exists in the parameter space, and, for each pixel in the bounding region for which the point of intersection exists, rendering the pixel on the screen, based on properties of the point of intersection. Other embodiments are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.