Editing Infrared (section)

=== Hyperspectral imaging ===

{{Main|Hyperspectral imaging}}

[[File:Specim aisaowl outdoor.png|thumb|left| Hyperspectral thermal infrared [[Emission spectrum|emission]] measurement, an outdoor scan in winter conditions, ambient temperature −15&nbsp;°C, image produced with a [[Specim]] LWIR hyperspectral imager. Relative radiance spectra from various targets in the image are shown with arrows. The [[infrared spectra]] of the different objects such as the watch clasp have clearly distinctive characteristics. The contrast level indicates the temperature of the object.<ref name="Holma">Holma, H., (May 2011), [http://www.photonik.de/index.php?id=11&np=5&artid=848&L=1 Thermische Hyperspektralbildgebung im langwelligen Infrarot] {{webarchive|url=https://web.archive.org/web/20110726171326/http://www.photonik.de/index.php?id=11&np=5&artid=848&L=1 |date=2011-07-26 }}, Photonik</ref>]]
[[File:Blue infrared light.jpg|thumb|Infrared light from the [[LED]] of a [[remote control]] as recorded by a digital camera]]

A hyperspectral image is a "picture" containing continuous [[Infrared spectroscopy|spectrum]] through a wide spectral range at each pixel. Hyperspectral imaging is gaining importance in the field of applied spectroscopy particularly with NIR, SWIR, MWIR, and LWIR spectral regions. Typical applications include biological, mineralogical, defence, and industrial measurements.

Thermal infrared hyperspectral imaging can be similarly performed using a [[thermographic camera]], with the fundamental difference that each pixel contains a full LWIR spectrum. Consequently, chemical identification of the object can be performed without a need for an external light source such as the Sun or the Moon. Such cameras are typically applied for geological measurements, outdoor surveillance and [[UAV]] applications.<ref name="Frost&Sullivan Specim Owl">Frost&Sullivan, Technical Insights, Aerospace&Defence (Feb 2011): [http://www.frost.com/prod/servlet/segment-toc.pag?segid=D870-00-48-00-00&ctxixpLink=FcmCtx3&ctxixpLabel=FcmCtx4 World First Thermal Hyperspectral Camera for Unmanned Aerial Vehicles] {{Webarchive|url=https://web.archive.org/web/20120310214352/http://www.frost.com/prod/servlet/segment-toc.pag?segid=D870-00-48-00-00&ctxixpLink=FcmCtx3&ctxixpLabel=FcmCtx4 |date=2012-03-10 }}.</ref>