Animation of three-dimensional characters along a path for motion video sequences
US6512522B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1999 |
| Grant date | Jan 28, 2003 |
| Priority date | — |
| Expiry date | Apr 15, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T13/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A character is represented in a character generator as a set of polygons. The character may be manipulated using three-dimensional animation techniques. A code for a character may be used to access a set of curves defining the outline of the character. This set of curves is transformed into a set of polygons. The set of polygons may be rendered as a three-dimensional object. The set of polygons may be created by converting the curves into sets of connected line segments and then tessellating the polygon defined by the line segments. Animation properties are represented using a normalized scale along a path or over time. Animation may be provided in a manner that is independent of the spatial and temporal resolution of the video to which it is applied. Such animation may be applied to characters defined by a set of polygons. Various three-dimensional spatial transformations, lighting effects and other colorizations may be provided. A user interface for editing a character string may provide two alternate displays. A first display allows a user to input and view any desired portion of the character string for the purpose of editing. A second display allows a user to view how the char…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.