Predicting joint positions
US8571263B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2011 |
| Grant date | Oct 29, 2013 |
| Priority date | — |
| Expiry date | Dec 15, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06N5/025
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Predicting joint positions is described, for example, to find joint positions of humans or animals (or parts thereof) in an image to control a computer game or for other applications. In an embodiment image elements of a depth image make joint position votes so that for example, an image element depicting part of a torso may vote for a position of a neck joint, a left knee joint and a right knee joint. A random decision forest may be trained to enable image elements to vote for the positions of one or more joints and the training process may use training images of bodies with specified joint positions. In an example a joint position vote is expressed as a vector representing a distance and a direction of a joint position from an image element making the vote. The random decision forest may be trained using a mixture of objectives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.