tuxbjie4.m

包括MATLAB7.0实用指南（下）中所有例子的源代码

 BW = imread('blobs.png');
       imshow(BW,[]);
       s=size(BW);
       for row = 2:55:s(1)
         for col=1:s(2)
           if BW(row,col), 
             break;
           end
         end
 
         contour = bwtraceboundary(BW, [row, col], 'W', 8, 50,...
                                   'counterclockwise');
         if(~isempty(contour))
           hold on; plot(contour(:,2),contour(:,1),'g','LineWidth',2);
           hold on; plot(col, row,'gx','LineWidth',2);
         else
           hold on; plot(col, row,'rx','LineWidth',2);
         end
       end