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how to detect circle using hough transform for color image?

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currently i am working to circle the color image using hough transform,but i am unable to do that.kindly guide me. i have extracted color image and now want to circle that by using hough transform or any other good method. thanks

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Accepted Answer

Paul Shoemaker
Paul Shoemaker on 7 Mar 2018
Have you searched the Matlab File Exchange? This one was featured on the "Pick of the Week" blog and may address your need.
Paul Shoemaker

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Muhammad Hammad Malik
Muhammad Hammad Malik on 8 Mar 2018
i tried this one but i want to circle color image. i applied this matlab code but i am having error in h = circle_hough(e, radii, 'same', 'normalise'); kindly solve the reason.thanks
im = imread('coins.png'); e = edge(im, 'canny'); imshow(e); radii = 15:1:40; h = circle_hough(e, radii, 'same', 'normalise'); %error peaks = circle_houghpeaks(h, radii, 'nhoodxy', 15, 'nhoodr', 21, 'npeaks', 10); imshow(im); hold on; for peak = peaks [x, y] = circlepoints(peak(3)); plot(x+peak(1), y+peak(2), 'g-'); end hold off
Anton Riyanto
Anton Riyanto on 8 May 2018
you should convert image into grayscale im = rgb2gray(imread('coins.png'));

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