1.3 Classification of Land Cover Using Landsat ETM+ Image
Image Classification is a process of sorting pixels into a number of data categories
based on their data file values and reducing images to information classes. Similar
features will have similar spectral responses. The spectral response of a feature is
unique with respect to all other features of interest. If we quantify the spectral response
of a known feature in an image, we can use this information to find all occurrences of
that feature throughout the image.