Bounding Boxes at any points

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arun Dhillon 2019-1-29

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https://ww2.mathworks.cn/matlabcentral/answers/442131-bounding-boxes-at-any-points

评论： Brian Hart 2019-1-30

Can anyone suggest me that how do i create a bounding box on any desired coordinate in an image,, for instance, if i want to create a bounding box of size 2*2mm at the pixel coordinate 13,15 or 25,25. Is there any way to create the bounding boxes as such.

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Answer 1

Brian Hart 2019-1-29

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Hi arun,

Here's some code to do what you asked, but with everything in units of the graph/plot (not mixing mm / pixel coordinates):

figure;
x=3;
y=5;
plot(x,y,'*')
boxHalfWidth = 1; %
boxXStart = x-boxHalfWidth;
boxYStart = y-boxHalfWidth;
boxWidth = 2 * boxHalfWidth;
boxHeight = 2 * boxHalfWidth;
rectangle('Position',[boxXStart boxYStart boxWidth boxHeight])
axis([0 10 0 10])
axis square