how to draw circles on a image for pixel count?

Sorry again. below is the image circ.png.

First i have to find the center(x,y) of the png image. using the center(x,y) of the png image file, i have draw a several circles with increasing radius until it covers the entire png image. the center of the circle should be at center of the png image. after drawing the circles, i have to count number of pixels in each circle. please help me in this regard.thanks in advance.

[Chris Barnhart]

Is this the image?

[Dhandapani.S]

yes. it is the concentric circles on an image. here the scriblings.

[Image Analyst]

I'm certain my solution would also work on the scriblings image here.

Answer 1

[Image Analyst]

I did that for you in your duplicate question: http://www.mathworks.com/matlabcentral/answers/169093#comment_261946