Compress-Decompress algrithms

Development Platform:

Matlab

huffdecode.m：Code Content

							function vector=huffdecode(zipped,info,image)
% if ~isa(zipped,'uint8')
%     error('input argument must be a uint8 vector');
%     
% end
len=length(zipped);
string=repmat(uint8(0),1,len.*8);
bitindex=1:8;
for index=1:len
string(bitindex+8.*(index-1))=uint8(bitget(zipped(index),bitindex));
end
string=logical(string(:));
len=length(string);
string((len-info.pad+1):end)=[];
len=length(string);
weights=2.^(0:51);
vector=repmat(uint8(0),1,info.length);
vectorindex=1;
codeindex=1;
code=0;
for index=1:len
    code=bitset(code,codeindex,string(index));
    codeindex=codeindex+1;
    byte=decode(bitset(code,codeindex),info);
    if byte>0
        vector(vectorindex)=byte-1;
        codeindex=1;
        code=0;
        vectorindex=vectorindex+1;
    end
end
vector=reshape(vector,info.rows,info.cols);
    
        
            

						