如何使用带有网络摄像头的 matlab vision.ForegroundDetector 而不是输入视频文件。
hsrc = vision.VideoFileReader('viptraffic.avi','ImageColorSpace','Intensity','VideoOutputDataType','uint8');
hfg = vision.ForegroundDetector(...
'NumTrainingFrames', 5, ... % 5 because of short video
'InitialVariance', 30*30); % initial standard deviation of 30
hblob = vision.BlobAnalysis(...
'CentroidOutputPort', false, 'AreaOutputPort', false, ...
'BoundingBoxOutputPort', true, ...
'MinimumBlobAreaSource', 'Property', 'MinimumBlobArea', 250);
hsi = vision.ShapeInserter('BorderColor','White');
hsnk = vision.VideoPlayer();
while ~isDone(hsrc)
frame = step(hsrc);
fgMask = step(hfg, frame);
bbox = step(hblob, fgMask);
out = step(hsi, frame, bbox); % draw bounding boxes around cars
step(hsnk, out); % view results in the video player
end
release(hsnk);
release(hsrc);