foregroundDetector?=?vision.ForegroundDetector（‘NumGaussians‘?5?...
????‘NumTrainingframes‘?50）;

videoTrainReader?=?vision.VideoFileReader（‘training2.avi‘）;

%training
for?i?=?1:50
????frame?=?step（videoTrainReader）;?%?read?the?next?video?frame
????foreground?=?step（foregroundDetector?frame）;
end
release（videoTrainReader）;?%?close?the?video?file

videoReader?=?vision.VideoFileReader（‘CH00_20150708092041_4.avi‘）;
videoPlayer?=?vision.VideoPlayer（‘Name‘?‘Detected?Cars‘）;
videoPlayer.Position（3:4）?=?[650400];??%?window?size:?[width?height]
se?=?strel（‘square‘?3）;?%?morphological?filter?for?noise?removal
blobAnalysis?=?vision.BlobAnalysis（‘BoundingBoxOutputPort‘?true?...
????‘AreaOutputPort‘?false?‘CentroidOutputPort‘?false?...
????‘MinimumBlobArea‘?250）;
k=1;
while?~isDone（videoReader）
????if?（mod（k25）~=1）
????????k=k+1;
????????continue;