boundaries_trace.m

虹膜识别中的边缘定位方法：使用边缘跟踪定位法找到边界点

I = imread('0040_001.bmp');
BW = im2bw(I,0.1);
K=medfilt2(BW);
%J = imfill(~K,'holes');
imshow(K);
boundaries = bwboundaries(~K);
imshow(I)
hold on;
for k=1:size(boundaries)
   b = boundaries{k};
   plot(b(:,2),b(:,1),'g','LineWidth',3);
end