OBJECTIVE FORESTRY

Detailed explanation-1: -The y-axis is used to measure pixel or ground feature values composed of statistical measurements for minimum, first quartile, median, third quartile, and maximum values.

Detailed explanation-2: -Spectral signature is the variation of reflectance or emittance of a material with respect to wavelengths (i.e., reflectance/emittance as a function of wavelength). The spectral signature of stars indicates the composition of the stellar atmosphere.

Detailed explanation-3: -Spectral signature is the signal to reflectance or emittance of a material with respect to wavelengths. The spectral signature of an object is a function of the incidental Electromagnetic wavelength and material interaction with that section of the Electromagnetic spectrum.

Detailed explanation-4: -Spectral signatures of rocks and mineral provide information on their chemical composition and crystal properties, grain size and roughness over a wide range of wavelengths from the visible to the thermal infrared.