function?LEN?=?Bg_make

rmdir（‘image‘‘s‘）;
mkdir（‘image‘）;
LEN?=?Extract_img（‘avi\smoke.avi‘）;?%把視頻每幀圖像提取出來
display（LEN）;
display（‘正在制作背景圖像，請稍后...‘）;
pause（3）;

pic?=?imread（strcat（‘image\smoke‘?int2str（2）?‘.jpg‘））;%讀入一張圖片，以獲取圖片像素矩陣大小
%?以下為對圖像序列用平均值法生成背景圖片--------------------------------------
[s1s2s3]?=?size（pic）;?%獲取圖片大小?s1s2為行和列
pic_1?=?pic;?%pic_1用于存儲平均后的背景圖像像素矩陣值
pic_2?=?zeros（s1s2LEN-1）;?????%pic_2用于存儲每張圖片對應位置的灰度矩陣
for?k=1:LEN
????pic_tmp?=?imread（strcat（‘image\smoke‘?int2str（k）?‘.jpg‘））;%讀入一張圖片
????pic_tmp?=?rgb2gray（pic_tmp）;????%生成灰度圖
????
????for?i=1:s1
????????for?j=1:s2
????????????pic_2（ijk）=?pic_tmp（ij）;?%存儲灰度矩陣
????????end
????end
end
fprintf（‘矩陣大小為：%d?x?%d‘s1s2）;?%?用于觀察背景圖片像素矩陣大小
pause（3）;
for?i=1:s1
????for?j=1:s2
????????pic_value?=?0;
????????for?k=2:LEN
????????????pic_value?=?pic_value?+?pic_2（ijk）;
????????end
????????pic_1（ij1:3）?=?pic_value/（LEN-1）;?%均值法?求背景圖片像素值
????end
????str?=?[num2str（i）‘?x?‘num2str（j）];????%用于觀察背景圖片生成進度
????display（str）;
end
imwrite（pic_1‘bg_img\bg.jpg‘‘jpg‘）;??%生成背景圖片-------------------------------

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

?????文件????1051250??2017-06-04?19:35??煙霧檢測\smoke_code\avi\smoke.avi

?????文件?????427744??2017-06-04?22:12??煙霧檢測\smoke_code\avi\smoke0.avi

?????文件??????34564??2017-06-05?00:06??煙霧檢測\smoke_code\bg_img\bg.jpg

?????文件???????1291??2017-06-04?23:07??煙霧檢測\smoke_code\Bg_make.m

?????文件????????466??2017-06-03?22:00??煙霧檢測\smoke_code\Divide_mat.m

?????文件????????477??2017-06-04?23:17??煙霧檢測\smoke_code\Extract_img.m

?????文件??????35949??2017-06-05?00:06??煙霧檢測\smoke_code\image\smoke1.jpg

?????文件??????37070??2017-06-05?00:06??煙霧檢測\smoke_code\image\smoke10.jpg

?????文件??????36166??2017-06-05?00:06??煙霧檢測\smoke_code\image\smoke100.jpg

?????文件??????36521??2017-06-05?00:06??煙霧檢測\smoke_code\image\smoke101.jpg

?????文件??????36515??2017-06-05?00:06??煙霧檢測\smoke_code\image\smoke102.jpg

?????文件??????36466??2017-06-05?00:06??煙霧檢測\smoke_code\image\smoke103.jpg

?????文件??????36591??2017-06-05?00:06??煙霧檢測\smoke_code\image\smoke104.jpg

?????文件??????36551??2017-06-05?00:06??煙霧檢測\smoke_code\image\smoke105.jpg

?????文件??????36469??2017-06-05?00:06??煙霧檢測\smoke_code\image\smoke106.jpg

?????文件??????36509??2017-06-05?00:06??煙霧檢測\smoke_code\image\smoke107.jpg

?????文件??????36513??2017-06-05?00:06??煙霧檢測\smoke_code\image\smoke108.jpg

?????文件??????36305??2017-06-05?00:06??煙霧檢測\smoke_code\image\smoke109.jpg

?????文件??????37096??2017-06-05?00:06??煙霧檢測\smoke_code\image\smoke11.jpg

?????文件??????36567??2017-06-05?00:06??煙霧檢測\smoke_code\image\smoke110.jpg

?????文件??????36170??2017-06-05?00:06??煙霧檢測\smoke_code\image\smoke111.jpg

?????文件??????36205??2017-06-05?00:06??煙霧檢測\smoke_code\image\smoke112.jpg

?????文件??????36255??2017-06-05?00:06??煙霧檢測\smoke_code\image\smoke113.jpg

?????文件??????36459??2017-06-05?00:06??煙霧檢測\smoke_code\image\smoke114.jpg

?????文件??????36464??2017-06-05?00:06??煙霧檢測\smoke_code\image\smoke115.jpg

?????文件??????36428??2017-06-05?00:06??煙霧檢測\smoke_code\image\smoke116.jpg

?????文件??????36241??2017-06-05?00:06??煙霧檢測\smoke_code\image\smoke117.jpg

?????文件??????36274??2017-06-05?00:06??煙霧檢測\smoke_code\image\smoke118.jpg

?????文件??????36422??2017-06-05?00:06??煙霧檢測\smoke_code\image\smoke119.jpg

?????文件??????37244??2017-06-05?00:06??煙霧檢測\smoke_code\image\smoke12.jpg

............此處省略459個文件信息