The most sensible post i read here....

Hi everyone! I'm new to this forum so any advise will be very much appreciated.

I'm currently creating a C program that would read a text file full of integer values that represents pixel spectrum values of an image(satellite image) and do some computation on it so I can classify them into dry grass, road, trees, water, building,etc.

The text files contains 4 values for each pixel representing 4 bands(band 1,band 2 band...