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HyperSpectral Imaging

Hyperspectral Imaging

 

Hyperspectral Imaging Spectrometers can acquire spectra at a pixel, over a line, or over an entire plane to produce a three dimensional hyper cube of spectral information as shown above. Applications include chemical analysis, pharmaceutical identification, vegetation growth monitoring, forensic detection of harmful substances, and atmospheric studies/monitoring. 

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Types of Hyperspectral Imagers

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Four types of Hyperspectral Images are:

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  1. Point Scan hyperspectral imagers scan an optical probe over an area while acquiring a full spectrum at each point.

    1. Advantages: Medium to high spatial resolution over small to large areas. High spectral resolution up to 8000 wavelengths in a single measurement. Low cost.​ More wavelength options.

    2. Disadvantages: Slow scanning speed.

  2. Line Scan hyperspectral imagers scan one direction while simultaneously acquiring spectra for each point along a line.

    1. ​Advantages: High spatial resolution. Medium spectral resolution up to 200 wavelengths. Higher costs.

    2. Disadvantages: Medium scanning speed.

  3. Wavelength Scan: Wavelength scanning hyperspectral imagers capture 2D images sequentially (without scanning) - with each image taken at different wavelengths (selected by a spinning disk synced with the camera frame rate).

    1. ​Advantages: High spatial resolution. Spinning disk continuously selects wavelength band. 

    2. Disadvantages: Low spectral resolution (4 to 12 bands).

  4. Snapshot: Snapshot solid-state hyperspectral imagers capture 2D images over multiple wavelengths simultaneously.

    1. ​Advantages: High speed with no moving parts (number of wavelengths (16 to 160). 

    2. Disadvantages: Lower spatial resolution.

Types of Hyperspectral imagers

What We Do

 

A typical 8MP digital camera produces 24,000,000 bytes of information. The same 8MP image with 2048 spectra per pixel and two bytes per spectra, will produce 32,768,000,000 bytes of information. That's 1300 times more information per image. With our Spectra Insight Software, this data can be acquired, stored, processed, visualized, and analyzed in near-real-time. In addition any spectra within an image can be compared with local and/or 3rd party spectral databases for substance identification.  See our Gallery for examples. 

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Spectra Insight supports all Hyperspectral Imager Types as follows:

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Point Scan Systems

 

  1. We incorporate a spectrometer of your choice with a fiber probe into our area scanners. Our software then automatically scans and acquires spectral data over the area-of-interest.

  2. Our Spectra Insight Software interfaces directly to the hardware acquiring data at high speeds for near-real time analysis.

 

  • Area size is dependent on the scanner. Contact us for area scans larger than our standard products.

 

Line Scan Systems

 

  1. We incorporate a spectrometer of your choice with a conveyer platform. Our software then automatically scans and acquires spectral data over the area-of-interest.

  2. Our Spectra Insight Software interfaces directly to the hardware acquiring data at high speeds for near-real time analysis.

 

Wavelength Scan and Snapshot Systems

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  1. Our Spectra Insight Software interfaces directly to the hardware acquiring data at high speeds for near-real time analysis.

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Summary

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  • Virtually any camera hyperspectral imager/spectrometer can be supported.

  • We provide complete integrated turnkey systems with scanner, spectrometer/imager, software, and computer.

  • See our list of recommended packaged hyperspectral imaging systems.

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