I have done some preprocessing on image to get some features.Now i have to classify the image as normal if those features are not seen and abnormal if the features are seen by using svm. How do i classify, i am new to svm and matlab.

a=imread('im1.png'); b = imresize(a, [576 720]); [x,y,z]=size(b); G=b(:,:,1); GS=rgb2gray(b); G=imadjust(GS,[0.2 0.8],[]); f0=edge(G,'canny'); er = imerode(f0, ones(3)); di = imdilate(f0, ones(3)); f1=di-er; f2=edge(f1,'canny'); f3=f2-f0; f4 = imfill(f3,'holes'); h= imsubtract(f4,f3); i= bwareaopen(h,1000); k=im2bw(G,0.2); l=and(i,k); area2 = sum(f3(:))

subplot(1,2,1),imshow(f3,[]);title('Microaneurysms Image');