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Method of multispectral imaging and an apparatus thereof

  • US 8,284,279 B2
  • Filed: 01/29/2008
  • Issued: 10/09/2012
  • Est. Priority Date: 01/29/2007
  • Status: Expired due to Fees
First Claim
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1. A multispectral imaging method comprising:

  • determining an on-off combination of a plurality of light sources illuminating a scene;

    illuminating the scene with the light sources according to the on-off combination selected on the basis of a first control signal generated by a microcontroller;

    capturing an image of the scene by operating a camera on the basis of a second control signal synchronized with the first control signal;

    determining a plurality of spectral basis functions and weights of the spectral basis functions; and

    acquiring a continuous spectral reflectance by summing values obtained by multiplying the spectral basis functions and respective weights,wherein the light sources comprise at least one light-emitting diode cluster and the camera comprises at least one RGB camera,wherein the on-off combination of the light sources to be illuminated to the scene is determined by a weight matrix minimizing offset of a spectral reflectance of a predetermined representative material to the spectral basis functions, camera channel, spectra of the light sources, and number of frames (N).

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