Scanning and tracking dynamic objects with depth cameras
US9299195B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2014 |
| Grant date | Mar 29, 2016 |
| Priority date | — |
| Expiry date | Sep 23, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2219/2004
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video conference server receives a plurality of video frames including a current frame and at least one previous frame. Each of the video frames includes a corresponding image and a corresponding depth map. The server produces a directional distance function (DDF) field that represents an area surrounding a target surface of the object captured in the current frame. A forward transformation is generated that modifies the reference surface to align with the target surface. Using at least a portion of the forward transformation, a backward transformation is calculated that modifies the target surface of the current frame to align with the reference surface. The backward transformation is then applied to the DDF to generate a transformed DDF. The server updates the reference model with the transformed DDF and transmits data for the updated reference model to enable a representation of the object to be produced at a remote location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.