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ISODATA classification


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Dear all,

Have taken some remote sensing courses since I have gained a raising interest in the topic. However the theory provided is very little. For a homework task I came along the following question but have no clue where to start since no information is given. Could someone help me out or give me a push in the right direction?

Explain how the ISODATA classifier works by performing an ISODATA classification on the following data. Use 3 classes, a maximum of 5 iterations, and a convergence threshold of 95%. Start this process by drawing the spectral space scatterplot for these data. Distribute the initial 3 class centers evenly along the diagonal of the scatterplot. Show your calculations for each iteration. Show the final classified image.

Image 1:
25 20 30
18 46 22
42 20 50

Image 2:
15 5 10
45 30 47
20 59 25

This is all the information we are provided with, thanks in advance!:)

 

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