MATLAB: Angle between two objects in image using regionprops.

angleimageImage Processing Toolboxorientationregionprops

In my image with function regionprops and parameter 'Orientation' I get an angle between object and x-axis. But I need to calculate angle between two objects. Is there an easy way to do it?

Best Answer

Uh, isn't the angles between the two object, the difference between the two Orientations?

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MATLAB: How to find the angle between the centre point and an edge point of a circle

I think the atand() or atan() function would do an outstanding job here.

MATLAB: Regionprops

Try this for a start:

img = zeros(5,5);
img(2:4, 2:4) = 1;
props = regionprops(img, 'PixelList');
disp(img);
disp(props.PixelList);

You can change the pattern of ones in img until you're clear about how the result is structured. Another simple but informative example:

img = zeros(5,5);
img(2,2) = 1;
img(4,4) = 2;
props = regionprops(img, 'PixelList');
disp(props(1).PixelList);
disp(props(2).PixelList);

Best Answer

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MATLAB: How to find the angle between the centre point and an edge point of a circle

MATLAB: Regionprops

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