# How to merge multiple bounding box into one?

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Leonard Yeo el 27 de En. de 2016
Comentada: Walter Roberson el 24 de Nov. de 2022
How do I merge multiple bounding on the same object as one bounding box around the object? Below is an example. Thanks
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### Respuestas (3)

Walter Roberson el 27 de En. de 2016
Editada: Image Analyst el 27 de En. de 2016
Convert the [x y width height] coordinates to start and end coordinates,
[x y x+width-1 y+height-1]
Now take the minimum of all of the left x over all of the boxes to get the left bound, the maximum over all of the right x to get the right bound, the minimum over the top y to get the lower bound, the maximum over the bottom y to get the upper bound.
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Nibir Sarker el 13 de Dic. de 2018
Please Provide me the full code for multiple bounding box converting into one bounding box.In the below figure i want to merge trash and human bounding box together then count the object and detect human and trash together.
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Walter Roberson el 25 de Mayo de 2021
The images were posted by @Nibir Sarker and are probably not the same ones uses by @Saketh Nannaka .

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kalpana k el 24 de Nov. de 2022
Editada: Walter Roberson el 24 de Nov. de 2022
if you are having the binary image as "I7", follow the below code to merge all the regions into common bounding box as below
RegionAll=regionprops(I7,'BoundingBox');
BBall=[];
for jk=1:length(RegionAll)
Box1=RegionAll(jk).BoundingBox;
Box2=[Box1(1) Box1(2) Box1(1)+Box1(3)-1 Box1(2)+Box1(4)-1];
BBall=[BBall ;Box2];
end
mX=min(BBall(:,1));
mY=min(BBall(:,2));
mW=max(BBall(:,3))-mX;
mH=max(BBall(:,4))-mY;
NewBB=[mX mY mW mH];
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Walter Roberson el 24 de Nov. de 2022
No loop needed
RegionAll=regionprops(I7,'BoundingBox');
AllBoxes = vertcat(RegionAll.BoundingBox);
xy = [AllBoxes(:,1:2), AllBoxes(:,1:2) + AllBoxes(:,3:4));
startX = min(xy(:,1));
startY = min(xy(:,2));
endX = max(xy(:,3));
endY = max(xy(:,4));
BB = [startX, startY, endX - startX, endY - startY];

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