使用MATLAB获取视频中每一帧的图像

MATLAB Version: 2010a

OS: Windows 7

这段代码可将avi视频中的每一帧画面截取出来，并转存到单独的文件夹中。

PS：下面的是matlab代码。

1 clear;

2 clc;

3

4 % choose a video file

5 [filename, pathname] = uigetfile(\'*.avi\', \'choose a video file\', \'video.avi\', \'Multiselect\', \'on\');

6

7 fprintf(\'filename = %s \npathname = %s \n\n\', filename, pathname);

8

9 if ischar(filename)

10

11 fprintf(\'choose file success.\n\n\');

12

13 video = mmreader([pathname filename]);

14 len = video.NumberOfFrames; % get length of the video

15

16 fprintf(\'length of video : %d \n\n\', len);

17

18 dir=strcat(pathname,strrep(filename,\'.avi\',\'\'),\'\pic\');

19 mkdir(dir); % create folder for saving picture

20 fn=strrep(filename,\'.avi\',\'\');

21

22 for k = 1 : len - 1

23 frame = rgb2gray(read(video, k));

24 imwrite(frame,strcat(dir,\'\\',fn,\'-avi-000\',int2str(k),\'.bmp\'),\'bmp\');

25 end

26

27 end