clc;clear?all;
fileName?=?‘cat_video.avi‘?;????%traffic.avi??D:666.avi
obj?=?VideoReader（fileName）;
numframes?=?obj.NumberOfframes;%?幀的總數
II=rgb2gray（read（obj1））;
[MN]=size（II）;
File=zeros（MNnumframes）;
File（::1）=II（::）;
for?oo=1:3
X=input（‘請輸入窗口大小:???‘）;
Z=input（‘請輸入搜索窗口半徑大小:???‘）;
Y=input（‘請輸入相鄰I幀的間隔：‘）;
%WWW=floor（numframes/Z）;
%MOBAN=ones（XX）/（X^2）;??
IZhenWeiZhi=1;
for?k?=?2:numframes%?讀取數據
?????frame?=rgb2gray（read（objk））;
?????frameI=rgb2gray（read（objIZhenWeiZhi））;
?????if???~（mod（kY））?%進行楨內預測
?????????if?k+Yames
?????????IZhenWeiZhi=k+Y;
?????????else
????????????IZhenWeiZhi=k;
?????????end
?????????[IzhenPSNRCompressionRatio]=IzhenYaSuo（frameI）;
?????????File（::k）=Izhen（::）;?
?????????ZPSNR（k）=PSNR;
?????????YASUOLV（k）=CompressionRatio;????
?????else???
?????????frameI=frameI;
?????????[PzhenQQQ]=PzhenGuJi（frameframeIXZ）;
?????????YASUOLV（k）=QQQ;
???????%Pzhen=conv2（double（Pzhen）double（MOBAN）‘same‘）;%%%%%%%%%%%%%%低通%%%%%%%%%%%%%
???????File（::k）=Pzhen（::）;
???????A=rgb2gray（read（objk））;
???????PP=double（A）-double（Pzhen）;
???????MSE=sqrt（sum（PP（:）.^2）/（M*N））;?%?均方誤差：指參數估計值與參數真值之差平方的期望值，記為MSE
???????ZPSNR（k）=10*log（255*255/MSE）/log（10）;???
?????end;%楨間相似度預測完畢
?end;

?subplot（22oo）;
?X=1:numframes;
?for?i=1:numframes
?????Y（i）=ZPSNR（i）;
?end;
?save?File;
?YaSuoLv=sum（YASUOLV）/（numframes-1）;
plot（XY‘r‘）;
xlabel（‘當前幀數‘）;
ylabel（‘峰值信噪比‘）;
title（{‘視頻壓縮率為：‘YaSuoLv}）;
implay（uint8（File））;
%implay（‘F:MK.avi‘）;
end;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2017-06-20?23:41??-Video-compression-algorithm-master\
?????文件?????????237??2017-06-20?23:41??-Video-compression-algorithm-master\ChuangKou.m
?????文件????????4485??2017-06-20?23:41??-Video-compression-algorithm-master\IzhenYaSuo.m
?????文件????????1359??2017-06-20?23:41??-Video-compression-algorithm-master\PzhenGuJi.m
?????文件????????1991??2017-06-20?23:41??-Video-compression-algorithm-master\README.md
?????文件??????350208??2017-06-20?23:41??-Video-compression-algorithm-master\cat_video.avi
?????文件????????1624??2017-06-20?23:41??-Video-compression-algorithm-master\chengleme.m