请问matlab中这段对视频的预处理代码实现了什么样的效果呢？

domenica

请问matlab中这段对视频的预处理代码实现了什么样的效果呢？

disp('input video');
avi= VideoReader('D:\MATLAB\SampleVideo.Mp4');
numFrames = avi.NumberOfFrames; %读取视频的帧数
6 |2 |% b" _! K9 cvidHeight = avi.Height;
/ @4 K/ u4 x( A# jvidWidth = avi.Width;
) h" R+ E& T# x- N( xfor i = 1 : numFrames
frame = read(avi,i); %读取每一帧
imshow(frame); %显示每一帧
/ x4 ^* y0 H* s" E& o/ `% Y1 {imwrite(frame,strcat(num2str(i),'.jpg'),'jpg'); %保存每一帧
end
mov(1:numFrames) = ...
" n  ?8 [1 X" N+ T/ ostruct('cdata', zeros(vidHeight, vidWidth, 3, 'uint8'),...
7 l7 P2 I; z" L. c& A! s" ~+ O'colormap', []);

for k = 1 : numFrames
1 ^5 B4 B! l! C/ d7 smov(k).cdata = read(avi, k);

( j0 h) k8 g1 b5 ~6 T2 p- Jend
7 {4 t1 G1 ]- S+ b1 r" Qvideo={mov.cdata};
for a = 1:length(video)
; j+ k1 v" `  R: p1 y; ^( mimagesc(video{a});
* Z0 E0 r6 [1 x3 a. {# Daxis image off
drawnow;
  {% g: m% h6 m6 z1 l# Q  M( ~* Zend;
8 i# u4 H% a1 Mdisp('output video');

谢谢

Liberallh21

有点困难，让我先读来历吧！！！