canny算子边缘检测-Canny.rar

canny算子边缘检测-Canny.rar
canny算子边缘检测，详细地代码，希望对大家有帮助


function CVHomework1
%        r = imread;
%        I=rgb2gray;

        I = imread;
        BW = canny_edge;
        figure,imshow
        figure,imshow

% Canny边缘检测的函数
% Input:
%   a: input image
%   sigma: Gaussian的均方差
function e=canny_edge
a = double;     % 将图像像素数据转换为double类型
[m,n] = size;
e = repmat),m,n);  % 生成初始矩阵
OffGate = 0.0001;  
Perc = 0.7;
Th = 0.4;
pw = 1:30;  % hardcoding. But it's large enough if sigma isn't too large
sig2 = sigma * sigma;  % 方差
width = max/) > OffGate));  % 寻找截断点
t = ;
len = 2*width 1;
t3=[t-0.5;t;t 0.5];
dgau = /)/sig2).';    % 一阶高斯函数的导数
ra = size;  % 图像行数
ca = size;  % 图像列数
ay = 255*a;
ax = 255*a';
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