连接图像中存在断点的二值区域

实验的目的：连接图像中存在断点的二值区域

原始图像如下所示：

实验原理：

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实验程序：

clear;close all;
im = imread('C:\Documents and Settings\luokh\桌面\line1.jpg');
imshow(im)
BW=im2bw(im,0.5);
s  = regionprops(BW, 'ConvexHull');
figure,imshow(BW);
% hold on;
% plot(s(1).ConvexHull(:,1)  ,s(1).ConvexHull(:,2)  , 'r*');
% 
% hold on;
% plot(s(2).ConvexHull(:,1)  ,s(2).ConvexHull(:,2)  , 'g*');
% 
% hold on;
% plot(s(3).ConvexHull(:,1)  ,s(3).ConvexHull(:,2)  , 'b*');
[m1 ,~]=size(s(1).ConvexHull);
[m2 ,~]=size(s(2).ConvexHull);
len=length(s);
for i=1:len-1
    for j=i+1:len
        [m1 ,~]=size(s(i).ConvexHull);
        [m2 ,~]=size(s(j).ConvexHull);
        for h=1:m1
            for k=1:m2
                  if  pdist([s(i).ConvexHull(h,:) ;s(j).ConvexHull(k,:)],'euclidean')<100
                      hold on;
                      plot([s(i).ConvexHull(h,1) ,s(j).ConvexHull(k,1)]  ,[s(i).ConvexHull(h,2) ,s(j).ConvexHull(k,2)],'r');
                  end
            end
        end
    end
end

实验结果：