Automatic analysis of multispectral images

Some ideas of automatic multispectral image analysis are introduced. Automatic multispectral image analysis plays a central role in numerically oriented remote sensing systems. It presupposes the utilization of electronic equipments, mainly computers and their peripherals, to help people to interpret the information contained in multispectral digital imagery. This necessity derives from the great amount of multispectral data gathered by remote sensors within satellites and airplanes. When the number of channels or spectral bands is increased, the interpretation becomes more complex and subjective. In some cases, for example, in harvest estimation in national or regional level, it is imperative to use computer systems to complete the work within the time required. Automatic analysis also aimes to eliminate subjective factors that appear in the human interpretation, so increasing the global precision.