Method of image processing using three facial feature points in three-dimensional head motion tracking
US6580810B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1999 |
| Grant date | Jun 17, 2003 |
| Priority date | — |
| Expiry date | Jun 10, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T9/004
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of image processing in three-dimensional (3-D) head motion tracking is disclosed. The method includes: providing a user's source image to a first processing device; capturing the user's first image and providing it to a second processing device; selecting three facial feature points of the first image from the second processing device to form a 3-D feature triangle; capturing user's consecutive video frames and providing them to the second processing device when the user proceeds with head motions; tracking the three facial feature points corresponding to the consecutive video frames to form a series of actual 2-D feature triangle; rotating and translating the 3-D feature triangle freely to form a plurality of geometric transformations, selecting one of the geometric transformations with acceptable error between the two consecutive 2-D feature triangles, repeating the step until the last frame of the consecutive video frames and geometric transformations corresponding to various consecutive video frames are formed; and providing the geometric transformations to the first processing device to generate a head motion corresponding to the user's source image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.