Method of tracking shape in a scene observed by an asynchronous light sensor
US10109057B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 24, 2015 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Oct 8, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10141
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Asynchronous information is provided by a sensor having a matrix of pixels disposed opposite the scene. The asynchronous information includes, for each pixel of the matrix, successive events originating from this pixel, that may depend on variations of light in the scene. A model representing the tracked shape of an object is updated after detecting events attributed to this object in the asynchronous information. Following detection, the updating of the model includes an association of a point of the model with the event detected by minimizing a criterion of distance with respect to the pixel of the matrix from which the detected event originates. The updated model is then determined as a function of the pixel of the matrix from which the detected event originates and attributed to the object and of the associated point in the model, independently of the associations performed before the detection of this event.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.