How to calculate number of circle detected

i want to know how to calculate the number of detected circle(Red circle)

thank you :)

[Walter Roberson]

Why not have the process that creates the circles count them?

[raja gopal]

can you teach me how to do it? i dont know the code for that process thank you :)

[Walter Roberson]

Did you mark all those circles by hand or do you have code that finds the circles?

[raja gopal]

i mark those circle using finding circle code but i dont know how to calculate the number of those circle

[Joseph Cheng]

how are you finding the circles in the finding circle code? is there a counter, index location? post the code for finding circles or specify what built in matlab functions you're using to accomplish detecting circles.

[Image Analyst]

Did you use imfindcircles() or viscircles()?

[raja gopal]

i use viscircles()

[Walter Roberson]

When you use viscircles, you know how many circles you are drawing at the time. Just total them up as you go.

[raja gopal]

im sorry,still blank here :( i stil new in matlab. can you show example please

[Hitesh Kurapati]

how can i get number of circles in a image using viscircles() command? Help me. Thanks in advance.

Answer 1

[Walter Roberson]

    .... you have a loop going on ...
      .... you find some circles, and their coordinates are in X and Y and size in R)
      %draw the circles
      centers = [X(:), Y(:)];
      viscircles(centers, R);
   .... end of loop

would become

   number_of_circles = 0;
    .... you have a loop going on ...
      .... you find some circles, and their coordinates are in X and Y and size in R)
      %draw the circles
      centers = [X(:), Y(:)];
      viscircles(centers, R)
      number_of_circles = number_of_circles + length(centers); 
   .... end of loop

That is, every time you draw a series of circles on the plot, add the number of circles just drawn to the running total.