rectangularity to detect objects
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i need to detect objects from an image using rectangularity and I do not know how to implement it please help me
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Matt J
2021-12-22
0 个投票
Hard to say without any example images, but pgonCorners might help:
You can use it to find the code's idea of the 4 vertices of the objects. If the vertices form a rectangle to within your tolerances, and if there is strong overlap between that rectangle and the actual object, then you would accept the object as rectangular.
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esraa mohammed
2021-12-22
i need to use rectangular to detect qr code object
My suggestion seems applicable to this image. The detected vertex pattern for the QR code seems very distinctive.
load Image
BW=bwpropfilt(Image,'ConvexArea',[10000,Inf]);
imshow(BW); hold on
reg=regionprops(BW,'ConvexImage','BoundingBox');
N=numel(reg);
for i=1:N
img=reg(i).ConvexImage;
V = fliplr(pgonCorners(img,4))+reg(i).BoundingBox(1:2); %vertices
scatter(V(:,1),V(:,2),'filled','SizeData',80,'MarkerEdgeColor','y');
end
hold off
esraa mohammed
2021-12-22
I'm sorry that I tired you. But an ERROR appears in this part
Matt J
2021-12-22
It's because you didn't download pgonCorners.
@Khizar Khalid What about the example code above? Or at the pgonCorners File Exchange site under the Examples tab?
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Image Analyst
2021-12-23
0 个投票
Lots of QR code finding routines in the File Exchange.
Some of them might be fairly robust, so check them out.
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