Method of controlling a function of a device and system for detecting the presence of a living being
US8818041B2 · kind B2 · utility
2Cited by
6References
26Claims
0Family size
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Key dates
| Filing date | Sep 23, 2013 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Sep 23, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30242
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of controlling a function of a device, includes obtaining a sequence (19;34;48) of digital images taken at consecutive points in time. At least one measurement zone (25) including a plurality of image points is selected. For at least one measurement zone (25), a signal (30;41;55) representative of at least variations in a time-varying value of a combination of pixel values at at least a number of the image points is obtained and at least one characteristic of the signal (30;41;55) within at least a range of interest of its spectrum relative to comparison data is determined. The determination comprises at least one of:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.