cannyedge.m

canny边缘检测算子,可以对灰度数字图象的弱边缘进行很好的检测

% Canny edge detection

% im=rgb2gray(im);

%Convolve image with gaussian of scale sigma=1.4 for smoothing
function fimage=cannyedge(im,high,low)
% im=imread('911.bmp');
% im=im(40:260,60:300);

% im=rgb2gray(im);

imnew=casd(im);

%Determining image gradient with sobel operator

[imnew1,edge]=sobcas(imnew);

[fimage]=finalcanny(imnew1,edge,high,low);

% imshow(uint8(fimage));