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NIRScan Nano EVM

Ahmed Abdelrazek
Prodigy 250 points


my question is about the output of that system, do I get a Hyperspectral image of the scanned object?

  • 0
    TI__Expert 6370 points

    Hello Ahmed,

    The output of the GUI is an absorbance plot over a specified wavelength range. Take a look at the DLP NIRscan Nano User's Guide, it provides information on the EVM, shows the GUI, and shows example plots of the output.

    Best regards,

    Trevor

  • 0 in reply to Trevor Dowd
    Prodigy 250 points

    Hi Trevor,

    I have seen the user guide and I understand that I get the absorbance plot over the specified wavelength.

    let me clarify my question a bit more:

    I need this wavelength absorption curve for every pixel in the sample I'm scanning. so I can build a hyper-spectral image.

    so my question is that: does the device give a wavelength absorption curve for the sample as a whole or for a point (pixel) or for a line (a row of pixels) or a 2D image (rows and columns in one shot)

    imagine I have a piece of meat with fat on the skin and bone in center and rest is meat. Do I get the absorption responses of many points in different parts of the piece?

    Thanks,

    Ahmed

  • 0 in reply to Ahmed Abdelrazek
    TI__Intellectual 1415 points

    Ahmed,

    Thank you for the clarification.

    The NIRscan Nano optics are not designed as a multispectral or hyperspectral imager. There is an input slit which is analyzed only in the wavelength domain, and returns a spectrum of all light within the designed waveband (900-1700nm) entering the slit. So in your example, you would get the average absorbance of the entire sample within the collection aperture, which is a 2.5mm circle at the window. More information about the reflective module included with the EVM is available in this thread.

    Other optical designs are possible with DLP technology, but this EVM is designed as a spectrometer, not a hyperspectral imager.