function [hough_space,hough_circle,para] = hough_circle(BW,step_r,step_angle,r_min,r_max,p) input BW:二值图像； step_r:检测的圆半径步长 step_angle:角度步长，单位为弧度 r_min:最小圆半径 r_max:最大圆半径 p:阈值，0，1之间的数 output hough_space:参数空间，h(a,b,r)表示圆心在(a,b)半径为r的圆上的点数 hough_circl:二值图像，检测到的圆 para:检测到的圆的圆心、半径 [m,n] = size(BW) size_r = round((r_max-r_min)/step_r)+1 size_angle = round(2*pi/step_angle) hough_space = zeros(m,n,size_r)

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