clear;
clc;
bigc=imread（‘bigc.bmp‘）;
[bMbN]=size（bigc）;
H=uint8（zeros（bMbN））;
L=uint8?（zeros（bMbN））;
for?i=1:bM
????for?j?=1:bN
????????a=dec2bin（bigc（ij））;
????????l=bitget（bigc（ij）1:4）;
????????l=l（11）*1+l（12）*2+l（13）*4+l（14）*8;
????????L（ij）=l;
????????h=bitget（bigc（ij）5:8）;??
????????h=h（11）*1+h（12）*2+h（13）*4+h（14）*8;
????????H（ij）=h;
????end
end
%?figure（1）;
%?imshow（L）;
%?figure（2）;
%?imshow（H）;
P=zeros（167167）;
M=zeros（1167）;
for?i=1:167
????for?j=1:167
????????if?i==j
????????????P（ij）=1;
????????end
????end
end
Q=?P;
for?i=1:83
??M=P（i:）;
??P（i:）=P（i+84:）;
??P（i+84:）=M;
end
save?P;
for?j=1:83
??M=Q（:j）;
?Q（:j）=Q（:j+84）;
??Q（:j+84）=M;
end
save?Q;
C=P;
for?i=1:167
????for?j=1:167
????????C（ij）=1;
????end
end
save?C;
L=uint8（P*double（L）*Q）?+?uint8（C）;
H=uint8（P*double（H）*Q）?+?uint8（C）;
%?figure（1）;
%?imshow（L）;
%?figure（2）;
%?imshow（H）;
%*********反變換**********%
%?ll=L-uint8（C）;
%?ll=（P^-1）*double（ll）*（Q^-1）;
%?hh=H-uint8（C）;
%?hh=（P^-1）*double（hh）*（Q^-1）;
%?figure（1）;
%?imshow（uint8（ll））;
%?figure（2）;
%?imshow（uint8（hh））;
%***************************%
[MN]=size（L）;
bigL=round（15*rand（3*M3*N））;
bigH=round（15*rand（3*M3*N））;
%************插值*************%
ii=1;
jj=1;
for?i=2:3:3*M
????for?j=2:3:3*N
????????bigL（ij）=L（iijj）;
?????jj=jj+1;
????end
????jj=1;
????ii=ii+1;????
end
figure（1）;
imshow（uint8（bigL））;
%********************************%
%************插值*************%
ii=1;
jj=1;
for?i=2:3:3*M
????for?j=2:3:3*N
????????bigH（ij）=H（iijj）;
?????jj=jj+1;
????end
????jj=1;
????ii=ii+1;????
end
figure（2）;
imshow（uint8（bigH））;
imwrite（uint8（bigL）‘bigL.bmp‘）;
imwrite（uint8（bigH）‘bigH.bmp‘）;
%********************************%

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

?????文件??????29134??2018-02-22?15:48??lsb3\bigc.bmp

?????文件???????1254??2018-01-24?14:41??lsb3\BIGC.png

?????文件?????253582??2018-03-14?13:24??lsb3\bigH.bmp

?????文件?????253582??2018-03-14?13:24??lsb3\bigL.bmp

?????文件???????5065??2018-03-14?13:24??lsb3\C.mat

?????文件???????1799??2018-02-24?16:29??lsb3\change.m

?????文件???????1833??2018-02-25?15:53??lsb3\compare.m

?????文件???12846134??2018-03-17?14:43??lsb3\gzws.bmp

?????文件?????736933??2017-10-20?15:10??lsb3\GZWS.jpg

?????文件????????716??2018-03-17?14:58??lsb3\lb.m

?????文件???????1651??2018-02-22?17:25??lsb3\lsb3.m

?????文件???13052662??2018-02-25?15:53??lsb3\lsb_watermarked1.bmp

?????文件???????4892??2018-03-14?13:24??lsb3\P.mat

?????文件??????86290??2018-01-24?14:41??lsb3\print.PNG

?????文件???????4905??2018-03-14?13:24??lsb3\Q.mat

?????文件????????967??2018-03-17?14:43??lsb3\qianru.m

?????文件??????29134??2018-03-17?14:44??lsb3\rbigc.bmp

?????文件???????2172??2018-02-25?15:54??lsb3\recomputer.m

?????文件??????29134??2018-02-25?15:54??lsb3\recoverwater1.bmp

?????文件???12846134??2018-03-16?16:36??lsb3\shuiyin.bmp

?????文件???????1943??2018-03-17?14:42??lsb3\tiqu.m

?????文件????????106??2018-02-22?15:48??lsb3\Untitled.m

?????文件????????525??2018-01-24?15:56??lsb3\Untitled3.m

?????文件??????74531??2018-03-12?09:21??lsb3\微信圖片_20180312092113.jpg

?????文件???????2770??2018-02-24?20:27??lsb3\捕獲.PNG

?????目錄??????????0??2018-05-07?12:49??lsb3

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

?????????????40267848????????????????????26