how to draw circles on a image for pixel count?

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Dhandapani.S 2015-1-22

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评论： Image Analyst 2015-1-23

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.

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Dhandapani.S 2015-1-23

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

Image Analyst 2015-1-23

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

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Image Analyst 2015-1-22

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https://ww2.mathworks.cn/matlabcentral/answers/171181-how-to-draw-circles-on-a-image-for-pixel-count#answer_165657

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

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