Method of supporting perspective projection
US5870099A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1996 |
| Grant date | Feb 9, 1999 |
| Priority date | — |
| Expiry date | Nov 27, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T15/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method, apparatus and computer program for generating a perspective projection of a three-dimensional object compatible with a two-dimensional perspective background image. In the invention rectangular parallelepiped guide figure is displayed on a two-dimensional background image. According to inputs from a user, a rectangular parallelepiped guide figure manipulation routine deforms and moves the rectangular parallelepiped guide figure. Once the rectangular parallelepiped has been manipulated to correspond to key features of the background image, a camera angle calculation routine calculates the camera angle, such as the eye position, the viewing direction and the field of view angle for the rectangular parallelepiped guide figure. Using the calculated camera angle, a perspective drawing of a three-dimensional object compatible with the two-dimensional perspective background image is generated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.