I am the beginer for doing simple image subtration to obtain defect image.

Hi, I am the beginer for doing simple image subtration to obtain defect image. Is it possible to make it only show the defect image if nothing difference wont show?

clc

clear

close all

warning off;

x=imread(‘origin.jpg’);

y=imread(‘capture.jpg’);

[g, c, d]=size(x);

y=imresize(y,[g,c]);

subplot(1,3,1);

imshow(x);

title(‘origin image’);

subplot(1,3,2);

imshow(y);

title(‘capture image’);

subplot(1,3,3);

imshow(x-y);

title(‘defect occur if difference colour shown’);

NOTE:-

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Is it possible to make it only show the defect image if nothing difference wont show?

may be add some judge rule?such as

clc
clear
close all
warning off;
x=imread('origin.jpg');
y=imread('capture.jpg');
[g, c, d]=size(x);
y=imresize(y,[g,c]);
subplot(1,3,1);
imshow(x);
title('origin image');
subplot(1,3,2);
imshow(y);

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