Video-based motion capture and adaptation
US9322653B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2013 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | May 15, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/23
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The disclosure provides an approach for estimating a state-space controller from a set of video frames depicting a motion of an entity. The approach includes incrementally optimizing parameters of the state-space controller and changing a structure of the state-space controller based on expanding subsets of the set of video frames. In one embodiment, a controller-estimation application greedily selects, at every stage of the incremental optimization, structure and parameters of the controller which minimize an objective function. In another embodiment, the controller-estimation application re-optimizes, after the incremental optimization, all parameters of the state-space controller based on all of the video frames. In yet a further embodiment, the controller-estimation application alters the structure of the state-space controller for robustness and compactness by adding cycles in the state-space controller and enforcing constraints on the structure of the state-space controller and adding and modifying state transition types, as appropriate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.