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?
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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');
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采纳的回答
yanqi liu
2022-1-17
yes,sir
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);
title('capture image');
bw = find((x-y) > 1);
if numel(bw) > 1
subplot(1,3,3);
imshow(x-y);
title('defect occur if difference colour shown');
end
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更多回答(1 个)
Image Analyst
2022-1-17
I suggest you use imabsdiff().
diffImage = imabsdiff(x, y);
threshold = 5; % Images must be at least 5 gray levels different to be considered a defect.
mask = diffImage >= threshold;
imshow(mask)
% Get area of defects
props = regionprops(mask, 'Area')
allAreas = [props.Area]
if ~isempty(props)
fprintf('Found %d defect areas.\n', length(props))
else
fprintf('Found no defect areas.\n')
end
7 个评论
Image Analyst
2022-1-24
You keep forgetting to attach your original images. I'll check back tomorrow.
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