Using constrained optimization in curve editing
US7057616B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2004 |
| Grant date | Jun 6, 2006 |
| Priority date | — |
| Expiry date | May 28, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T11/203
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A curve may be reshaped by determining new locations for its control points that minimize some measure of the change in the curve (typically, the “energy” of the change), while meeting the specified editing constraints. For example, a designer or other user may indicate an editing constraint by selecting a point anywhere on a curve and moving it to a new location. In response, the unconstrained control points may be moved automatically and simultaneously to optimal new locations. The resulting change in the curve may be aesthetically pleasing and satisfy the editing constraints. This curve editing technique may allow designers to be more productive by providing predictable and intuitive results while enabling curves to be directly manipulated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.