Color display modes for a thermal imaging system
US10848725B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2018 |
| Grant date | Nov 24, 2020 |
| Priority date | — |
| Expiry date | Jul 31, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10048
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for allocating display colors to thermal image intensity data acquired by thermal band photodetectors. Intensity data from the photodetectors corresponding to scene temperature is converted to a digital value within an analog to digital conversion (ADC) range. The full ADC range may be divided into two or more sub-ranges. In one sub-range, intensity values within that sub-range are assigned display colors from a first color table utilizing one or more Histogram Equalization (HE) techniques. In another sub-range, specific display values from a color table different from the first may be are assigned to specific intensity values. Lower temperatures may be assigned colors using HE and higher temperatures are assigned specific colors corresponding to specific temperatures. Such an arrangement is particularly applicable to thermal imaging use by firefighters because the arrangement allows them to determine temperature directly from displayed color for potentially dangerous temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.