How to draw represent connected components bounding boxes with different color??
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I'm working on handwritten documents,so I want to show bounding boxes of different line with different color. I've a matrix which contains the connected components values and I want to color bounding boxes using this color.
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Answers (1)
Image Analyst
on 17 Apr 2019
Use plot(xBox, yBox, 'Color', yourColor), or rectangle('Position', bb, 'EdgeColor', yourColor) or something like that. xBox is obtained from the bounding box like
props = regionprops(binaryImage, 'BoundingBox');
for k = 1 : length(props)
bb = props(k).BoundingBox);
xBox = [bb(1), bb(1)+bb(3), bb(1)+bb(3), bb(1), bb(1)];
yBox = [bb(2), bb(2), bb(2)+bb(4), bb(2)+bb(4), bb(2)];
plot(xBox, yBox, 'Color', rand(1,3));
hold on;
end
If you still can't figure it out, write back.
5 Comments
Image Analyst
on 18 Apr 2019
Yes, my code should do that assuming you have rows and columns for where you want to put the boxes.
Again, I don't see a question in your comment (i.e. a sentence ending with a question mark), but if you want to colorize blobs, use label2rgb(). Then you can make each box have the same color as the blob if you want to.
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