How to fit a circle in the marked area of the image?

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mathru
mathru 2020-6-13
回答： Image Analyst 2020-6-13
I want to fit a circle at the peak (the marked area) of the wavy surface. How can I do that?

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回答（2 个）

KSSV
KSSV 2020-6-13
If you fix the center C, radius R of the circle. You can plot circle using.
C = rand(1,2) ; % center of circle
R = 1. ; % Radius of the circle
th = linspace(0,2*pi) ;
x = C(1)+R*cos(th) ;
y = C(2)+R*sin(th) ;
plot(x,y) ;
Image Analyst
Image Analyst 2020-6-13
Using the (x,y) coordinates, you can fit a circle using the FAQ:
https://matlab.fandom.com/wiki/FAQ#How_can_I_fit_a_circle_to_a_set_of_XY_data.3F

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