"Index in position 2 exceeds array bounds." - imfindcircles

Running the code:

I = imread('L1.tif');

[centersBright,radiiBright,metricBright] = imfindcircles(I,[10 30], ...

'ObjectPolarity','bright','Sensitivity',0.92,'EdgeThreshold',0.1);

xi = centersBright(:,1);

yi = centersBright(:,2);

P = impixel(I,xi,yi);

Intensity = P(:,1);

clearvars -except Intensity centersBright

It gives me the error message : "Index in position 2 exceeds array bounds.", and I do not know how to resolve it. I am expecting the funciton to identify ~7 circles.

Answer 1

[Taylor]

If you run this in a script, MATLAB will tell you exactly what line is yielding the error. You are trying to indexing to a position that is greater than the size of a particular dimension of a variable. For example, centersBright should be an mx2 array where m is the number of circles found. Let's say 7 circles were found, so centersBright is 7x2. If you were to index to centersBright(10,1) you would get a similar error because you are trying to reference to a tenth circle that does not exist.