Method and system for inversion of detail-in-context presentations with folding
US6961071B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2003 |
| Grant date | Nov 1, 2005 |
| Priority date | — |
| Expiry date | Nov 21, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/2628
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method is for inverting a distorted surface presentation into an undistorted surface presentation in a detail-in-context presentation system including the steps of: selecting an input point on the undistorted surface; calculating a vector from the input point to a reference viewpoint; locating a starting point lying above the distorted surface and on the vector; locating a first bracketing point for a first intersection point of the vector and the distorted surface lying above the distorted surface and on the vector; locating a second bracketing point for the first intersection point lying below the distorted surface, and below the first intersection point, but above any subsequent intersection points of the vector and the distorted surface; locating a midpoint between the first and second bracketing points; and, determining if the midpoint is an acceptable approximation for the first intersection point thus being an inversion point corresponding to the input point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.