MATLAB: Does anyone know how can finding angle in an ellipse

ellipse fitting. image processing.Image Processing Toolbox

 The left ellipse is an fitted ellipse to an object in time (t) and right one is in t+1. I mean after 1 minute the object (fitted ellipse) was rotated about alpha degree. how can I find (α) in the rotated ellipse (right one)?

Best Answer

Since you're using regionprops to fit your ellipses, and one of the properties returned by regionprop is the ellipse orientation, why can't you just subtract the angles of your two ellipses?
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