Hyperspectral imaging

The goal of hyperspectral imaging is to obtain the spectrum for each pixel in the image of a scene, with the purpose of finding objects, identifying materials, or detecting processes. For each pixel in an image, a hyperspectral camera acquires the light intensity (radiance) for a large number (typically a few tens to several hundred) of contiguous spectral bands. Multispectral Example: wide bands (Image not drawn to scale). A hyperspectral image could have hundreds or thousands of bands.

In general, it comes from an imaging spectrometer.

For much of the past decade, hyperspectral imaging has been an area of active research and development, and hyperspectral images have been available only to researchers. With the recent appearance of commercial airborne hyperspectral imaging systems, hyperspectral imaging is poised to enter the mainstream of. Specim is a world leading company for manufacturing hyperspectral imaging instruments such as hyperspectral cameras and systems.

Application Development Kit (ADK): Contains vis-NIR module and stan motorized linear-translation stage, ultra- stable fiber . In HSI, each pixel of the image contains spectral information, which is added as a third dimension of values to the . Images have dozens to hundreds of narrow contiguous bands. Vast quantities of data because of the number of bands simultaneously image creating a 3-dimensional image cube.

HSI acquires a three-dimensional dataset called hypercube, with two spatial dimensions and one spectral dimension. Spatially resolved spectral imaging . Additional information about hyperspectral imaging can be found at our knowledge base. More detailed background is available from our research . High-performance lightweight compact hyperspectral imaging cameras at an affordable price.

Hyperspectral Imaging Applications. Using the fast scanning capability, we demonstrate hyperspectral SFG imaging in the . We report on the first realization of a hyperspectral imaging technique for surface plasmon polaritons on metallic nanostructures. The technique uses a scanning electron beam and allows for simple visualization of light emission from decoupled plasmons, providing information on decay lengths and feature sizes with . We investigated the feasibility and potentiality of determining firmness, soluble solids content (SSC), and pH in kiwifruits using hyperspectral imaging , combined with variable selection methods and calibration models. The images were acquired by a push-broom hyperspectral reflectance imaging system . Figure 1: Graphical representation of the 3D hyperspectral data cube and the acquisition parameters of scanning systems.

Scanning systems measure only one slice through the data cube at any given instant. Wavelength-scanning ( tunable filter-type) systems measure a slice at a fixed wavelength, slit-scanning . A new set of future satellites called hyperspectral imaging satellites is set to add teeth to the way India is gleaned from about 6km in space. Headwall’s spectral imaging products include hyperspectral products for a range of industries.

It explores applications of statistical signal processing to . It delivers signal processing algorithms and turnkey solutions to specific imaging problems for industry and the public sector. The primary proof-of-concept technology demonstration of this effort is the timely and accurate determination of a measurable quantity (such as rock type or vegetation health) as defined by a subject matter expert. An objective of the AISE project is to engage with more than two dozen SMEs to leverage . In healthcare for example, hyperspectral imaging can be used to discriminate tissue, nerves, and blood vessels during non-invasive surgery to support the surgeons precision.

The Malvern MatrixNIR hyperspectral imaging camera (right) is based on an Indium-Gallium-Arsenide detector and a Liquid Crystal Tunable Filter. Chemical Colour Imaging (CCI) makes complex hyperspectral data on a molecular level usable for machine vision. This means that each pixel is 0.