regionprops (b,'Orientation')

Hello.

I am using this

angle=regionprops(b,'Orientation');
theta=angle.Orientation;

for angle finding.

Now in my thesis I have to write their formulas and mathematical forms.

Now from where we get it?

[darova]

What is the question? What do you heed help with?

[Image Analyst]

Formulas for what??? The line going through the blob centroids at that angle? Please specify. By the way, this is clearer and more general (in case there are multiple blobs):

props = regionprops(b,'Orientation'); % Make angle measurements.
allTheta = [props.Orientation]; % All angles in a single vector.