be_count2.m

matlab写的lzw和huffman的编码

function c=be_count2(x)
%算直方图
c=zeros(1,52);
for k=0:51
    for i=1:256
        for j=1:256
           if  x(i,j)==k
               c(k+1)=c(k+1)+1;
           end
       end
   end
end
c=c./(size(x)*size(x)'/2);