function?bit_seq=ACHuffmanEncoding（xy）?

%%*******************************************************************?
%%?對掃描后每塊的AC系數(shù)進行Huffman編碼Revised?in?Jun2006
%%?x為zigzag掃描連0串中0的個數(shù);y為連0串后非0值的幅度
%%?即分別為（runlevel）中的runlevel
%%*******************************************************************

%%*************************************?AC?Huffman?Code?Look?up?************************************%%
%%?Z為連0串中0的個數(shù)，R為幅度的絕對值
%%?第一個符號的編碼：accode為對二維事件（runlevel）的編碼結(jié)果，codelen為編碼的碼長
%%?對第二個符號的編碼：
%%?若level?>?0，則用其二進制原碼表示，若level?%%**************************************************************************************************%%

Z=x;
v0=y;
R=abs（y）;
if?R==1;amplen=1;
elseif（R?>=???2?&&?R?<=????3）;amplen?=?2;
elseif（R?>=???4?&&?R?<=????7）;amplen?=?3;
elseif（R?>=???8?&&?R?<=???15）;amplen?=?4;
elseif（R?>=??16?&&?R?<=???31）;amplen?=?5;
elseif（R?>=??32?&&?R?<=???63）;amplen?=?6;
elseif（R?>=??64?&&?R?<=??127）;amplen?=?7;
elseif（R?>=?128?&&?R?<=??255）;amplen?=?8;
elseif（R?>=?256?&&?R?<=??511）;amplen?=?9;
elseif（R?>=?512?&&?R?<=?1023）;amplen?=?10;
end?
?%%（Z==0?&&?amplen==0）;codelen=4;accode=10;%%accode=0xA;%%accode=1010;（EOB）
if?（Z==0?&&?amplen==1）;?codelen=2;accode=0;%%accode=0x0;%%accode=00;
elseif??（Z==0?&&?amplen==2）;codelen=2;accode=1;%%accode=0x1;%%accode=01;
elseif??（Z==0?&&?amplen==3）;codelen=3;accode=4;%%accode=0x4;%%accode=100;
elseif??（Z==0?&&?amplen==4）;codelen=4;accode=11;%%accode=0xB;%%accode=1011;
elseif??（Z==0?&&?amplen==5）;codelen=5;accode=26;%%accode=0x1A;%%accode=1?1010;
elseif??（Z==0?&&?amplen==6）;codelen=7;accode=120;%%accode=0x78;%%accode=111?1000;
elseif??（Z==0?&&?amplen==7）;codelen=8;accode=248;%%accode=0xF8;%%accode=1111?1000;
elseif??（Z==0?&&?amplen==8）;codelen=10;accode=1014;%%accode=0x3F6;%%accode=11?1111?0110;??
elseif??（Z==0?&&?amplen==9）;codelen=16;accode=65410;%%accode=0xFF82;%%accode=1111?1111?1000?0010;
elseif?（Z==0?&&?amplen==10）;codelen=16;accode=65411;%%accode=0xFF83;%%accode=1111?1111?1000?0011;
????
elseif??（Z==1?&&?amplen==1）;?codelen=4;accode=12;???%%accode=1100;
elseif??（Z==1?&&?amplen==2）;?codelen=5;accode=27;???%%accode=1?1011;
elseif??（Z==1?&&?amplen==3）;?codelen=7;accode=121;??%%accode=1111?001;
elseif??（Z==1?&&?amplen==4）;?codelen=9;accode=502;??%%accode=1?1111?0110;
elseif??（Z==1?&&?amplen==5）;codelen=11;accode=2038;?%%accode=111?1111?0110;
elseif??（Z==1?&&?amplen==6）;codelen=16;accode=65412;%%accode=1111?1111?1000?0100;
elseif??（Z==1?&&?amplen==7）;codelen=16;accode=65413;%%accode=1111?1111?1000?0101;
elseif??（Z==1?&&?amplen==8）;codelen=16;accode=65414;%%accode=1111?1111?1000?0110;??
elseif??（Z==1?&&?amplen==9）;codelen=16;accode=65415;%%accode=1111?1111?1000?0111;
elseif?（Z==1?&&?amplen==10）;codelen=16;accode=65416;%%accode=1111?1111?1000?1000;
????
elseif?（Z==2?&&?amplen==1）;codelen=5;accode=28;%%accode=1?1100;
elseif?（Z==2?&&?amplen==2）;codelen=8;accode=249;%%accode=1111?1001;
elseif?（Z==2?&&?amplen==3）;codelen=10;accode=1015;%%a

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????15043??2018-05-28?10:00??JPEG-for-Matlab\ACHuffmanEncoding.m

?????文件???????3534??2018-05-28?10:45??JPEG-for-Matlab\DCHuffmanEncoding.m

?????文件???????8286??2018-05-28?10:39??JPEG-for-Matlab\func_DCTJPEG.m

?????文件?????263224??2011-05-13?14:39??JPEG-for-Matlab\lena.bmp

?????文件????????312??2009-12-26?19:33??JPEG-for-Matlab\PSNR.m

?????文件???????1193??2009-12-26?19:33??JPEG-for-Matlab\zigzag.m

?????目錄??????????0??2018-05-28?10:16??JPEG-for-Matlab

-----------?---------??----------?-----??----

???????????????291592????????????????????7