Detecting and tracking point features with primary colors
US8873846B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 2012 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Apr 14, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30244
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A feature tracking technique for detecting and tracking feature points with primary colors. An energy value may be computed for each color channel of a feature. If the energy of all the channels is above a threshold, then the feature may be tracked according to a feature tracking method using all channels. Otherwise, if the energy of all of the channels is below the threshold, then the feature is not tracked. If the energy of at least one (but not all) of the channels is below the threshold, then the feature is considered to have primary color, and the feature may be tracked according to the feature tracking method using only the one or more channels with energy above the threshold. The feature tracking techniques may, for example, be used to establish point trajectories in an image sequence for various Structure from Motion (SFM) techniques.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.