How can I detect the number of circles on the picture on MATLAB?

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H Y
H Y 2018-1-16
回答： michio 2018-1-16
I'm working to detect the number of circles on the picture with the following tips. imfindcircles
dots.png
While executing the following code, there are several errors, and I hope to hear advice to fix it.
A = imread('dots.png');
imshow(A)
Rmin = 0;
Rmax = 600;
[centersDark, radiiDark] = imfindcircles(A,[Rmin Rmax],'ObjectPolarity','dark');
viscircles(centersDark, radiiDark ,'Color','w');
errors
Error using imfindcircles>parseInputs (line 240)
The value of 'RadiusRange' is invalid. Expected input number 2, RADIUS_RANGE, to be positive.
Error in imfindcircles (line 142)
parsedInputs = parseInputs(varargin{:});
Error in trial1_16 (line 8)
[centersDark, radiiDark] = imfindcircles(A,[Rmin Rmax],'ObjectPolarity','dark');

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采纳的回答

michio
michio 2018-1-16
As the error message states that "The value of 'RadiusRange' is invalid. Expected input number 2, RADIUS_RANGE, to be positive.", the range have to be a set of positive integers.
Could you try
Rmin = 1;
instead of 0?

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