Volume rendering method which increases apparent opacity of semitransparent objects in regions having higher specular reflectivity
US5499323A · kind A · utility
25Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1994 |
| Grant date | Mar 12, 1996 |
| Priority date | — |
| Expiry date | Jun 16, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T15/506
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Portions showing greater specular reflection of an object to be displayed are displayed with pixels whose opacity, .alpha..sub.1, is emphasized according to the specular reflected component of a shading model, in which case the specular reflected component thus calculated for shading is also utilized for arithmetic operation of emphasized opacity, .alpha..sub.1, and high-speed processing is sought through tabulating various variables such as .alpha..sub.s (an additional opacity introduced for emphasis by a specular reflected component), .alpha..sub.n (a primary opacity), and G (a gradient vector).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.