black task processing in an image
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Hello
I have a problem with the image display level, the problem is that I have black spots in the white part and I want to eliminate them
attaching the resulting image and the .mat file
thank you in advance
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Image Analyst
2019-3-7
Threshold the image and then call imfill()
binaryImage = grayImage > someValue;
binaryImage = imfill(binaryImage, 'holes');
If you want only holes of a certain diameter filled, then it's a little trickier, so write back.
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dakhli mohamed
2019-3-7
Image Analyst
2019-3-7
What do you mean by "eliminate" and "maximum of black spots"?
Did you try my suggestion and it doesn't do what you want?
dakhli mohamed
2019-3-7
dakhli mohamed
2019-3-7
here is the image obtained after the execution of your code
Image Analyst
2019-3-8
Then try this, if you want all black holes filled to white:
s = load('outputt.mat')
u = logical(s.u);
subplot(2, 1, 1);
imshow(u, 'InitialMagnification', 200);
axis('on', 'image');
% Fill in everything.
[rows, columns] = find(u);
boundaryIndexes = boundary(columns, rows);
hold on;
plot(columns(boundaryIndexes), rows(boundaryIndexes), 'r-', 'LineWidth', 2);
newImage = poly2mask(columns(boundaryIndexes), rows(boundaryIndexes), size(u, 1), size(u, 2));
subplot(2, 1, 2);
imshow(newImage, 'InitialMagnification', 200);
axis('on', 'image');
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