Position estimation of light source of a luminaire from light footprint
US10210426B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2015 |
| Grant date | Feb 19, 2019 |
| Priority date | — |
| Expiry date | Sep 10, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T7/74
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a method for determining an unknown position, i.e. height and/or orientation, of a light source within a locality. The determination is based on a first image of a scene within the locality acquired by a camera in such a manner as to contain a light footprint of light emitted by the light source from the unknown position. The method includes steps of processing the first image to determine one or more characteristics of the at least the portion of the light footprint within the first image, comparing the determined characteristics with one or more corresponding known characteristics of a light footprint of light emitted by the light source from a known position to determine a deviation between the determined and the known characteristics, and determining the unknown position of the light source based on the determined deviation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.