Wednesday, 28 May 2014

LINEAR FILTER IN MATLAB PROGRAM

/*CSEMATTER.BLOGSPOT.IN
PROGRAM FOR LINEAR FILTER IN MATLAB*/


A = imread('atul1.jpg');
A=imresize(A,[300,300]);
A = rgb2gray(A)
figure,imshow(A),title('ORIGINAL IMAGE');
modifyA=zeros(size(A)+2);
B=[1,2,4;1,2,4;1,2,4];
        for x=1:size(A,1)
            for y=1:size(A,2)
                modifyA(x+1,y+1)=A(x,y);
            end
        end
   
for i= 1:size(modifyA,1)-2
    for j=1:size(modifyA,2)-2
        sum=0;
            for x=1:3
               for y=1:3
                sum=sum +((modifyA(i+x-1,j+y-1))*B(x,y));
            end
        end
       sum=sum/9;
        A(i,j)=sum;
     
    end
end

figure,imshow(A),title('IMAGE AFTER LINEAR FILTERING');

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