%?BDCT?Blocked?discrete?cosine?transform
%
%????B?=?BDCT（A）?computes?DCT2?transform?of?A?in?8x8?blocks.??B?is
%????the?same?size?as?A?and?contains?the?cosine?transform?coefficients?for
%????each?block.??This?transform?can?be?inverted?using?IBDCT.
%
%????B?=?BDCT（AN）?computes?DCT2?transform?of?A?in?blocks?of?size?NxN.

%?Phil?Sallee?9/03

function?b?=?bdct（an）

if?（nargin???n?=?8;
end

%?generate?the?matrix?for?the?full?2D?DCT?transform?（both?directions）
dctm?=?bdctmtx（n）;

%?reshape?image?into?blocks?multiply?and?reshape?back
[vrc]?=?im2vec（an）;
b?=?vec2im（dctm*v0nrc）;

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2014-06-23?09:56??源代碼\
?????目錄???????????0??2014-06-23?09:56??源代碼\DJPG-TIFS\
?????文件????????2983??2013-11-19?17:09??源代碼\DJPG-TIFS\EMperiod.m
?????文件????????2165??2013-11-19?17:09??源代碼\DJPG-TIFS\LLR.m
?????文件???????12787??2003-10-30?18:44??源代碼\DJPG-TIFS\README
?????文件????????6058??2013-11-19?17:09??源代碼\DJPG-TIFS\README.txt
?????文件?????????614??2003-10-30?18:44??源代碼\DJPG-TIFS\bdct.m
?????文件?????????506??2003-10-30?18:44??源代碼\DJPG-TIFS\bdctmtx.m
?????文件?????????120??2013-11-19?17:09??源代碼\DJPG-TIFS\ceil2.m
?????文件????????2269??2013-11-28?21:39??源代碼\DJPG-TIFS\demo.asv
?????文件????????2269??2013-11-19?18:09??源代碼\DJPG-TIFS\demo.m
?????文件?????????563??2003-10-30?18:44??源代碼\DJPG-TIFS\dequantize.m
?????文件?????????122??2013-11-19?17:09??源代碼\DJPG-TIFS\floor2.m
?????文件??????187627??2013-11-19?17:09??源代碼\DJPG-TIFS\florence2_tamp95_3_7.jpg
?????文件????????6617??2013-11-19?17:09??源代碼\DJPG-TIFS\getJmapNA_EM.m
?????文件????????5110??2013-11-19?17:09??源代碼\DJPG-TIFS\getJmap_EM.m
?????文件???????35147??2013-11-19?17:09??源代碼\DJPG-TIFS\gpl.txt
?????文件????????2474??2013-11-19?17:09??源代碼\DJPG-TIFS\h1period.m
?????文件????????2738??2013-11-19?17:09??源代碼\DJPG-TIFS\h1periodDQ.m
?????文件?????????638??2003-10-30?18:44??源代碼\DJPG-TIFS\ibdct.m
?????文件????????1552??2003-10-30?18:44??源代碼\DJPG-TIFS\im2vec.m
?????文件????????2462??2003-10-30?18:44??源代碼\DJPG-TIFS\jpeg_qtable.m
?????文件???????14229??2003-10-30?18:44??源代碼\DJPG-TIFS\jpeg_read.c
?????文件???????65536??2003-10-30?18:44??源代碼\DJPG-TIFS\jpeg_read.dll
?????文件?????????474??2003-10-30?18:44??源代碼\DJPG-TIFS\jpeg_read.m
?????文件????????2061??2013-11-19?17:09??源代碼\DJPG-TIFS\jpeg_rec.m
?????文件???????12714??2003-10-30?18:44??源代碼\DJPG-TIFS\jpeg_write.c
?????文件???????57344??2003-10-30?18:44??源代碼\DJPG-TIFS\jpeg_write.dll
?????文件?????????430??2003-10-30?18:44??源代碼\DJPG-TIFS\jpeg_write.m
?????文件?????????521??2003-10-30?18:44??源代碼\DJPG-TIFS\quantize.m
?????文件??????130430??2013-11-19?17:09??源代碼\DJPG-TIFS\redcar_90_tamp95.jpg
............此處省略2個(gè)文件信息