%%%%%%%%%%%%%%%%%%%%%%讀取視頻
xyloObj?=?VideoReader（‘traffic.avi‘）;?%?獲取video對(duì)象，avi文件的話，改為相應(yīng)擴(kuò)展名即可
nframes?=?xyloObj.NumberOfframes;?%?查看video對(duì)象的屬性
vidHeight?=?xyloObj.Height;
vidWidth?=?xyloObj.Width;
mov?=?zeros（vidHeight?vidWidth?3?‘uint8‘）;
mov?=?read（xyloObj[1?nframes]）;
%?Preallocate?movie?structure.
mov1（1:nframes）?=?...
????struct（‘cdata‘?zeros（vidHeight?vidWidth?3nframes‘uint8‘）...
???????????‘colormap‘?[]）;
%?Read?one?frame?at?a?time.
for?k?=?1?:?nframes
????mov1（k）.cdata?=?mov（:::k）;
end
%?Size?a?figure?based?on?the?video‘s?width?and?height.
%%%%%%%%%%%%%%%%%%%%%%幀間差分法
for?i=2:nframes
?