MATLAB 截取有目标物体算法

tic;
clear all;

for k=3:40
    if k<4
        imdata1=imread('00005.bmp');       
      for k1=1:10:210
          for k2=1:10:282
              k3=k1+59;
              k4=k2+59;
        imdata2=imdata1(k1:k3,k2:k4);
        b=imdata1(k1:k3,k2:k4);
        level=graythresh(b);%获取灰度图片的阈值
        b=medfilt2(b,[6,6]);%进行中值滤波;
      %  b=imadjust(b,[ ],[ ],2);%增强高灰度级
       % disp(level);
        c=im2bw(b,0.4);
        i=0;
        for i1=1:60
            for i2=1:60
                if(c(i1,i2)==1)
                    i=i+1;
                end
            end
        end
        disp(i)
        if(i<3000)       
         imwrite(imdata2,strcat('500',int2str(k1),int2str(k2),'.png'),'png');%把每帧图像存入硬盘 
          %  imwrite(c,strcat('300',int2str(k1),int2str(k2),'.png'),'png');%把每帧图像存入硬盘
        end  
          end
      end
  
    end   
end  
toc;