i want to remove the edges and get a perfect circle like uploaded image figure 2 .

can i convert figure 1 circle in to figure 2 using Matlab .

(figure 1)

(figure 2)

[gfgf99]

Actually figure 1 is a result image of after using edge detected techniques for some object . Then i want to trim the edges like perfect circle as figure 2 shows. Because some places of my edge detected circle(figure 1) like a saw-tooth it will cause to generate wrong results at the end of my further algorithm . i thing my question now clearly understand sorry for the incomplete question. Anyone know the solution for this...

Thank you Best regard!

[gfgf99]

anyone can help to me?

[Image Analyst]

At least I was trying, but you never answered my questions in my latest comment. the ball was in your court but you never returned the information so I quit.

Answer 1

[Image Analyst]

See the FAQ: http://matlab.wikia.com/wiki/FAQ#How_can_I_fit_a_circle_to_a_set_of_XY_data.3F

[gfgf99]

Thanks for the reply Image Analyst,but this did not answer my question .

Actually figure 1 is a result image of after using edge detected techniques for some object . Then i want to trim the edges like perfect circle as figure 2 shows. Because some places of my edge detected circle(figure 1) like a saw-tooth it will cause to come wrong results at the end of my further algorithm . i thing my question now clearly understand sorry for the incomplete question. Can you please help me..

[Image Analyst]

I'm not sure how this does not solve your problem. Perhaps if you told me what image you started with and what you actually want to measure I could advise you on the proper way. Often/usually edge detection is not the best way to approach image analysis (not sure why 99% of people think it is). Or if you told me what your "further algorithm" does with the perfect circle (x,y) coordinates.

[gfgf99]

thank you sir i tried and fixed it

Answer 2

[Image Analyst]

If you want the outer ounding circle instead of a fitted one, see John D'Errico's code http://www.mathworks.com/matlabcentral/fileexchange/34767-a-suite-of-minimal-bounding-objects

[gfgf99]

Thanks for the reply Image Analyst,but this did not answer my question .

Actually figure 1 is a result image of after using edge detected techniques for some object . Then i want to trim the edges like perfect circle as figure 2 shows. Because some places of my edge detected circle(figure 1) like a saw-tooth it will cause to come wrong results at the end of my further algorithm . i thing my question now clearly understand sorry for the incomplete question. Can you please help me..