3.1 DATA REQUIREMENTS:
In the beginning let us know what is the meaning of Image classification? The intent of the classification process is to categorize all pixels in a digital image into one of several land cover classes, or “themes”. This categorized data may then be used to produce thematic maps of the land cover present in an image. Normally, multispectral data are used to perform the classification indeed. The spectral pattern present within the data for ach pixel is used as the numerical basis for categorization.