Image Processing : Boundary

I am trying to obtain the boundary and measure the perimeter of of the spanner. However, it seems like there are some weird boundary selected as well (1, 2 , 10, 11). can anyone suggest me how can i get rid of the unknown boundary ? i am new to matlab image processing and i am using image analyst 's code. Below is the coding for boundary :
boundaries = bwboundaries(binaryImage,'noholes');
numberOfBoundaries = size(boundaries, 1);
for k = 1 : numberOfBoundaries
thisBoundary = boundaries{k};
plot(thisBoundary(:,2), thisBoundary(:,1), 'g', 'LineWidth', 2);
end

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soo kin wah
soo kin wah 2018-10-7

0 个投票

Solved! bwareaopen can be used to solve this problem ;)

更多回答(1 个)

Image Analyst
Image Analyst 2018-10-7

0 个投票

Sorry, I didn't see that image when you originally posted it. You can also use bwareafilt() either by specifying the allowable size range, or by telling it how many blobs you want to take.

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