Process for representing views of an object
US5245538A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 17, 1989 |
| Grant date | Sep 14, 1993 |
| Priority date | — |
| Expiry date | Oct 17, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T17/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The segmented object is represented in terms of a numerical volume by calculating the gradients of the physical quantities loaded into the volume elements of this numerical volume. The gradients are shown to be perpendicular to the true surface of the object to be segmented and that they determine a surface more precisely than a treatment carried out on the surface of the segmented object. To eliminate the artefacts of a contour line which are visible in particular in the regions of low relief, the gradients assigned to volume elements of the surface of the object are weighted with respect to gradients assigned to volume elements adjacent to these volume elements by apparent facets of this segmented object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.