decode8_4val.m

将一幅多媒体图像根据各个块的不同特性蔡用不同的编码方式

function decode8_4val(total_cell)
global point0 cell_count0 total_decode mi ni mi1 ni1 mi2 ni2 total_cell
%point0=point0+1;

 total=0;
     while total<64
                                position=total_cell(point0+1);val=total_cell(point0+2);youch=total_cell(point0+3);
                                temp1(1,position:position+youch-1)=val;
                                total=total+youch;point0=point0+3;
                              
     end
   total2=0  
     while total2<64
                                position2=total_cell(point0+1);val2=total_cell(point0+2);youch2=total_cell(point0+3);
                                temp2(1,position2:position2+youch2-1)=val2;
                                total2=total2+youch2;point0=point0+3;
                              
     end  
     data1=total_cell(point0+1);data2=total_cell(point0+2);data3=total_cell(point0+3);data4=total_cell(point0+4);
     for i=1:64
         if(temp1(i)==0 && temp2(i)==0)
             value(i)=data1;
         elseif(temp1(i)==0 && temp2(i)==1)
             value(i)=data2;
         elseif(temp1(i)==1 && temp2(i)==0)
             value(i)=data3;
         else
             value(i)=data4; 
         end
     end
     tmpval=reshape(value,8,8); total_decode((16*mi-15+(mi1-1)*8):(16*mi-15+(mi1-1)*8+7),(16*ni-15+(ni1-1)*8):(16*ni-15+(ni1-1)*8+7))=tmpval;
     point0=point0+4;