clc;
clear;

targetavi=‘SampleVideo.avi‘;?????????????????????????????%%原始視頻
resultavi=‘result.avi‘;??????????????????????????????????%%檢測結果視頻

%%%%%%%%%%%%%%%%%%%%%%讀取視頻
mov=aviread（targetavi）;
fnum=size（mov2）;%讀取電影的禎數，mov為1*temp?，讀取的是mov中得第二個參數。

%%%%%%%%%%%%%%%%%%%%%%建立結果視頻
aviobj?=?avifile（resultavi）;
aviobj.Quality?=?100;
aviobj.Fps?=?15;
aviobj.compression=‘Indeo5‘;


%%%%%%%%%%%%%%%%%%%%%%幀間差分法
for?i=2:fnum-1
????x=mov（i-1）.cdata（:::）;
????y=mov（i）.cdata（:::）;
????z=mov（i+1）.cdata（:::）;
????
????????m=rgb2gray（x）;
????????m=medfilt2（m）;

????????n=rgb2gray（y）;
????????n=medfilt2（n）;
????????
????????o=rgb2gray（z）;
????????o=medfilt2（o）;
???

????????q=im2double（n）;
????????w=im2double（m）;
????????p=im2double（o）;
????????
????????c=q-w;%%差分

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

?????文件???????1576??2013-05-31?13:28??三幀差分法\frameDifference.m

?????文件?????206336??2013-05-31?13:28??三幀差分法\result.avi

?????文件?????638976??2005-03-14?13:59??三幀差分法\SampleVideo.avi

?????文件?????171902??2013-05-31?13:28??三幀差分法\結果.bmp

?????目錄??????????0??2013-05-31?13:28??三幀差分法

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

??????????????1018790????????????????????5