Deformable surface tracking in augmented reality applications
US9147113B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 7, 2013 |
| Grant date | Sep 29, 2015 |
| Priority date | — |
| Expiry date | Jan 2, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30204
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer implemented method for tracking a marker on a deformable surface in augmented reality (AR) applications, comprising: detecting image-key-points in a currently processed video frame of a video-captured scene; performing key-point-correspondence searching and matching the image-key-points with model-key-points are identified from an original image of the marker, comprising: calculating an key-point matching score for each image-key-point; applying a key-point matching score filter on the key-point matching scores; restricting the searching of the image-key-points in the currently processed video frame to within same mesh block determined in a previously processed video frame of the captured video frames; and applying adaptive thresholds on the key-point matching scores in determining successful matches of the image-key-points; performing motion detection of the marker in the video-captured scene and halting the application of the key-point matching score filter and suspending the restriction on the image-key-point searching if the marker is in significant movement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.