MATLAB: Semi automatic circle fit function

lasersemi automatic circle fit functionsphere

In this image on the sphere there are five laser strips. What is semi automatic circle fit function.. In one document i read that using this we can find sphere centre and radius within the image plane.. So, i want to find it in MATLAB and require some details about it..

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Would the FAQ help? See http://matlab.wikia.com/wiki/FAQ#How_can_I_fit_a_circle_to_a_set_of_XY_data.3F

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MATLAB: How to plot a semi-circle

      theta = 0:.01:pi;
      y = 500*exp(1j*theta);
      plot(real(y),imag(y));
      axis([-750 750 -750 750]);
      grid on;

MATLAB: Area of intersection of two ellipses

You can follow the below steps.

For the two ellipses i.e get coordinates of both the ellipses. Let L1, L2 be your coordinates of both the ellipses.
Use this function interx to get the the intersection points. This will give you four points. https://in.mathworks.com/matlabcentral/fileexchange/22441-curve-intersections?focused=5165138&tab=function
Use this function to fit the ellipse. https://in.mathworks.com/matlabcentral/fileexchange/3215-fit_ellipse

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Related Solutions

MATLAB: How to plot a semi-circle

MATLAB: Area of intersection of two ellipses

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