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Improving information content of images of vegetation objects using spectral data

“…Differences in the reflectance spectra of objects is the basis for recognition of such objects by optical remote sensing [1][2][3][4][5]. In studies of the Earth's vegetative cover, in particular forests, the possibilities of remote sensing have been far from completely utilized [6,7]. Most work on remote sensing as applied to forests (as for other vegetation stands) is based on data obtained from space vehicles.…”

“…Most work on remote sensing as applied to forests (as for other vegetation stands) is based on data obtained from space vehicles. In a number of publications, the authors rely on data obtained using spectrometers and video spectrometers mounted on airplanes [8][9][10][11] and also on helicopters [7]. The advantages and disadvantages of airborne imaging from aircraft are briefly discussed in [5,7].…”

“…In a number of publications, the authors rely on data obtained using spectrometers and video spectrometers mounted on airplanes [8][9][10][11] and also on helicopters [7]. The advantages and disadvantages of airborne imaging from aircraft are briefly discussed in [5,7]. In addition, we note that when aircraft are used, the reliability of the classification of types of stands may be very high.…”

“…This choice depends on the objects to be studied (the underlying surfaces) and what needs to be done. The video spectrometric system VSK-2 that we designed and used for studying forests [5,7] is an imageplane scanner. Each frame records "instantaneously"; in contrast to hyperspectral scanners, which are object-plane scanners (push-broom type) that can be used only with stabilized platforms, this results in minimal geometric distortions because of the instability of the aircraft.…”