Matlab Code for Spatial Domain Operation (Spatial Filtering)

Spatial Filtering involves passing a weighted mask over the image and replacing the original pixel value corresponding to the center of the mask .

The size of the mask should be odd to ensure it has a center value .

Matlab Code for Average  filter

a=imread(‘cameraman.tif’);

h1=(1/9)*ones(3,3);

h2=(1/25)*ones(5,5);

b1=conv2(a,h1,’same’);

b2=conv2(a,h2,’same’);

figure

imshow(uint8(b1));

title(‘output image using 3×3 mask’);

figure

imshow(uint8(b2));


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