first.m

用于模式识别并且判断汽车速度的源代码

imread bz_1217n3.bmp;
a=ans;
b=im2double(a);
c=b;
for i=21:3225;
  for j=51:2100;
     %b(i,j,1)=0;
    %d(1)=b(i,j-2,1);     
    %d(2)=b(i,j-1,1); 
    %d(3)=b(i,j,1);
    %d(4)=b(i,j+1,1);
    %d(5)=b(i,j+2,1);
   for t=1:101;
     d(t)=b(i,j-51+t,1);
   end
    
    % for x=0:3;
     %for y=x+1:4;   for y=0:4-x;      
     % if d(y)>=d(y-1);
     %   e=d(y); 
     %   d(y)=d(y-1);
      %  d(y-1)=e;
    
    for x=1:100;
     for y=x+1:101;
      if d(y)>=d(x);
        e=d(y); 
        d(y)=d(x);
        d(x)=e;
      end
     end
   end
    c(i,j,1)=d(51);
  
    %if b(i,j,1)                                     
    % c(i,j,1)=0;
    %end
  end
end

image(c);