基于matlab程序hough变换检测圆源码

Posted 2021-07-07 fpga&matlab

rawimg = imread('test1.bmp');
tic;
[accum, circen, cirrad] = CircularHough_Grd(rawimg, [15 60]);
toc;
%figure(1); imagesc(accum); axis image;
%title('Accumulation Array from Circular Hough Transform');
figure(2); imagesc(rawimg); colormap('gray'); axis image;
hold on;
plot(circen(:,1), circen(:,2), 'r+');
for k = 1 : size(circen, 1),
    DrawCircle(circen(k,1), circen(k,2), cirrad(k), 32, 'b-');
end
hold off;
title(['Raw Image with Circles Detected ', ...
'(center positions and radii marked)']);
figure(3); surf(accum, 'EdgeColor', 'none'); axis ij;
title('3-D View of the Accumulation Array');
%  COMMENTS ON EXAMPLE #0:
%  Kind of an easy case to handle. To detect circles in the image whose
%  radii range from 15 to 60. Default values for arguments 'grdthres',
%  'fltr4LM_R', 'multirad' and 'fltr4accum' are used.
%

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