%?Hough?變換
i=imread（‘test.bmp‘）;
i=rgb2gray（i）;
i_long?=size（i1）;
i_width=size（i2）;
i_edge=edge（i‘robert‘）;
i_hough=zeros（300300）;
theta_step=3.14*2/299;
theta=0:theta_step:2*3.14;

x_max=1;
x_min=1;
y_max=1;
y_min=1;

for?x=1:i_long
????for?y=1:i_width
????????if?i_edge（xy）==1
????????????x_max=max（x_maxx）;
????????????x_min=min（x_minx）;
????????????y_max=max（y_maxy）;
????????????y_min=min（y_miny）;
????????end
????end
end

p_min=sqrt（x_min^2+y_min^2）;
p_max=sqrt（x_max^2+y_max^2）;
p_step=2*p_max/299;
p=-p_max:p_step:p_max;

for?x=1:i_long
????for?y=1:i_width
????????if?i_edge（xy）==1?????%對于邊緣點進行累加
???????????rou=x.*cos（theta）+y.*sin（theta）;
????????????w=fix（rou./p_step）+151;
????????????l=fix（1+theta./theta_step）;
????????????n=300.*（l-1）+w;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????949??2009-07-23?18:36??Hough\hough.m

?????文件??????31056??2006-01-11?17:33??Hough\HOUGH變換.jpg

?????目錄??????????0??2006-01-17?00:21??Hough

-----------?---------??----------?-----??----

????????????????32005????????????????????3