Circle Detection Using Hough Transforms: example.m - File Exchange

Code covered by the BSD License

Highlights from
Circle Detection Using Hough Transforms

RGBCircle(image, y, x, rad, c... RGBCircle Draws a circle or ellipse on a RGB image.
cfresize(im, longDimSize) CFRESIZE resize the image if its long dimension is bigger then longDimSize
circlefinder(im, radMin, radM... CIRCLEFINDER finds circles in an RGB or grayscale image.
extractcircles(houghTrans, tr... EXTRACTCIRCLES extract circles from transformed image.
houghtransform(im, radVec) HOUGHTRANSFORM circle hough transform on a binary image im.
nonmaxsup1d(x, thresh) finds the maxima points in x with value > thresh
nonmaxsuppts(cim, radius, thr... NONMAXSUPPTS - Non-maximal suppression for features/corners
example.m
example2.m
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from Circle Detection Using Hough Transforms by Kobi Nistel
Finds circles of any radii in a image.

example.m

%circlefinder - useage example
clc
close all
clear all

filename = 'mbike2.jpg';
im = imread(filename);

% finds the circles
[r c rad] = circlefinder(im);

% draws the circles
for n=1:length(rad)
    im = RGBCircle(im,r(n),c(n),rad(n), [0 255 0], 2);
end
figure;
imshow(im)

Highlights from Circle Detection Using Hough Transforms

Highlights from
Circle Detection Using Hough Transforms