# 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;

[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

`clcclearclose allwarning 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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## Technical Source

Simple! That is me, a simple person. I am passionate about knowledge and reading. That’s why I have decided to write and share a bit of my life and thoughts to.