While The Human Eye Sees Visible Light, Hyperspectral Imaging Sees Infrared And Ultraviolet.
The electromagnetic spectrum is a range of all electromagnetic radiation that comes from particular objects. The Hyperspectral Imaging collects and processes information that crosses this electromagnetic spectrum. The human eye can only see visible light while the Hyperspectral Imaging is capable of seeing infrared and ultraviolet light.
The Hyperspectral Imaging is used in agriculture, mineralogy, physics, and surveillance. It is this ghost imaging that helps drillers to find oil fields. In the earth's surface and through to its core, there are signatures that radiation put on its object. Sometimes these signatures are called fingerprints. There are satellites up in space that collect data on these signatures through ghost imaging and they come out as different colored pixels. Each one of these pixels is a fingerprint of the chemical elements and compounds that are found in the earth's surface.
The picture that the Hyperspectral Imaging creates basically a map of where you can find oil and gas and other elements of the earth. Up until recently, only oil companies had access to this type of Hyperspectral Imaging but it is starting to be used by small independent oil explorers.
The Hyperspectral imaging software works by using hyperspectral sensors. It is these sensors that actually collect the data as a set of images and each one of these images represent a part of the electromagnetic spectrum. These images are called the spectral band. Then, the spectral band is then put together to analyze, it is formed into a hyperspectral cube which is when it is able to be analyzed and processed. There is also multispectral imaging but the difference between the hyperspectral imaging and the multispectral imaging is defined by the number of spectral bands that each creates. The multispectal bands usually are captured by several sensors and only create tens to hundreds of bands while the hyperspectral bands are captured by usually just one sensor and creates hundreds to thousands of bands and this is because the sensor is contiguous while the multispectral imaging is not. The Hyperspectral imaging is becoming more and more popular. It is being used in universities for archeology and is also being used in other applications such as historical manuscript research, ecology fields, and surveillance fields. NASA and USGS have used the hyperspectal imaging to create a website of the minerals and their spectral signatures in order for researchers to visit and get information that they may need on those specific minerals. The Hyperspectral imaging is also being used in the monitoring of the development and health of crops. It may be very costly for farmers to do this, but they have to look at the bigger picture and if they have an application that can detect early disease outbreaks and to detect the chemical composition of the plants, then they would have much better crops which mean more money.
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