classifier

I have extracted features of a images using GLCM,now based upon this i want to classify to which class it belongs,i have 3 classes,please help how to procees using knn classifier

the image is a brain image(tumour) and i want to classify it to which class it belongs,normal abnormal and middle stage ,please tell on which basis i have to classify

[Sehrish]

i have to do the same thing, can you please help me regarding that

[Walter Roberson]

Sehrish, you indicated that you are not working with grayscale, that you are working with RGB. GLCM is a technique that can only be applied to grayscale.