Determination of land cover spatial distribution and change scientifically and accurately have a great significance for
monitoring the regional ecological environment and the impact of human activities. This paper proposed a method basing
on the waveform characteristics of spectral for mapping large area using TM data simply, quickly and accurately. In the
experiments, we segment the image to object and order the object value of the TM5 1~7 except the thermal infrared band
and each order result given the only value. In the next, using manual methods assigned the order to get the typical surface
feature such as water, soil, vegetation. Classification using spectral waveform characteristics can effectively avoid the TM
image classification error, due to spectral differences by accessing time and spatial, spectrum differences on same object
and spectral mixing .This method can map the large area of typical surface is simply, fast and accurate, and support on
theoretical basis.
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