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Instrument: MVI : Multiband Vegetation Imager
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A new method for measuring plant canopy nonrandomness and other
architectural components has been developed using a 16 bit
(65535 gray scale levels) charged-coupled device (CCD) camera
that captures images of plant canopies in two wavelength
bands. This complete system is referred to as a multiband
vegetation imager (MVI). The use of two wavelength bands
(visible (VIS) 400-620 nn and near infrared (NIR) 720-950 nm)
permits identification of sunlit and shaded foliage, sunlit and
shaded branch area, clouds, and blue shy based on the camera's
resolution, and the Varying spectral properties that scene
components have in the two wavelength bands. This approach is
different from other canopy imaging methods (such as fish-eye
photography) because it emphasizes measuring the fraction of an
image occupied by various scene components (branches, shaded
leaves, sunlit leaves) under different sky conditions rather
than simply the canopy gap fraction under uniform sky

[Summary provided by the University of Wisconsin-Madison]