1. IMAGE PROCESSING (SAMPLE ASSIGNMENT)
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IMAGE PROCESSING TOOL
This sample assignment shows image processing tool which consist opening and
closing.
closing.m
clc;
clear all;
close all;
z=uigetfile('*.*','Select an image file');
a=imread(z);
% b=isrgb(a);
% if( b==1)
a=rgb2gray(a);
% end
s=[255 255 255 ; 255 255 255 ; 255 255 255];
r=size(a,1);
c=size(a,2);
for i=2:r-1
for j=2:c-1
if (a(i-1,j-1)==s(1) || a(i-1,j)==s(2) || a(i-1,j+1)==s(3) || a(i,j-1)==s(4) || a(i,j)==s(5) ||
a(i,j+1)==s(6) || a(i+1,j-1)==s(7) || a(i+1,j)==s(8) || a(i+1,j+1)==s(9))
new(i,j)=255;
else
new(i,j)=0;
end
end
end
r=size(new,1);
c=size(new,2);
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2. for i=2:r-1
for j=2:c-1
if (new(i-1,j-1)==s(1) && new(i-1,j)==s(2) && new(i-1,j+1)==s(3) && new(i,j-1)==s(4)
&& new(i,j)==s(5) && new(i,j+1)==s(6) && new(i+1,j-1)==s(7) && new(i+1,j)==s(8) &&
new(i+1,j+1)==s(9))
new1(i,j)=255;
else
new1(i,j)=0;
end
end
end
subplot(121)
imshow(a);
title('Original Image');
subplot(122)
imshow(new1);
title('Resultant Image');
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