Bounding Box largest rectangle?
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When I use regionprops BoundingBox, it seems to always capture smaller blobs on the left most side of my image and not my largest blob. How do I bound the box around the largest blob?
4 个评论
David Young
2015-8-16
regionprops finds all blobs - there must be something else happening. Please could you post the image and code that demonstrates the problem.
Ivan Q
2015-8-16
Walter Roberson
2015-8-16
box=stats(index).BoundingBox;
Ivan Q
2015-8-16
采纳的回答
Image Analyst
2015-8-16
stats is a structure array. Each element is a structure and has it's own bounding box. So stats(1).BoundingBox is the bounding box (x,y,width,height) of the first blob. And stats(2).BoundingBox is the bounding box (x,y,width,height) of the second blob, and so on. To display them all:
hold on;
for k = 1 : length(stats) % Loop through all blobs.
% Find the bounding box of each blob.
thisBlobsBoundingBox = stats(k).BoundingBox;
rectangle('Position', thisBlobsBoundingBox);
end
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nilton brites
2017-9-21
0 个投票
explain what is definition of bounding box on image?
2 个评论
Image Analyst
2017-9-21
It's the box, with edges parallel to the edges of the image, that contains object(s) of interest, such as blobs you got by thresholding. You can have a box around each blob, or around the whole group of them.
Walter Roberson
2017-9-21
In particular a bounding box is most often computed as the smallest box with horizontal and vertical sides that encloses the object(s), but bounding boxes can, in general, be larger than that: they are basically a box large enough to be sure you are enclosing the portion of interest.
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