Bounding box using MATLAB for the image

Question

I am trying to draw a bounding box around the white blob in the image below:

Answer 1

I think you can try to use bwboundries

boundaries = bwboundaries(blob);

numberOfBoundaries = size(boundaries);

for k = 1 : numberOfBoundaries

    thisBoundary = boundaries{k};

    plot(thisBoundary(:,2), thisBoundary(:,1), 'g', 'LineWidth', 2);

end