Method and system for generating detail-in-context lens presentations for elevation data
US7173636B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 18, 2005 |
| Grant date | Feb 6, 2007 |
| Priority date | — |
| Expiry date | Jul 28, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T17/05
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for generating a presentation of a region-of-interest in an elevation data representation for display on a display screen, comprising: calculating a displacement height for at least one point in the representation falling within a lens by inversely scaling a vertical height of the point from a viewpoint for the presentation by a magnification for the lens; if the point is within a shoulder region of the lens, scaling the displacement height by a value of the shoulder function evaluated at a value given by a distance between a projection point in the basal plane and a closest point on a perimeter of a focal region as projected onto the basal plane, the distance being scaled by a distance between the closest point and an intersection point on a perimeter of the shoulder region; and, displacing the point by the displacement height to generate the presentation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.