video camera data processing
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Hi,
I have a camera recorded video data.
how can i convert video camera data into time-series data?
Thank you!
回答（2 个）
KALYAN ACHARJYA
2021-1-11
编辑：KALYAN ACHARJYA
2021-1-11
0 个投票
Convert the video in series of images (frames)
Here
Is that OK?
Bjorn Gustavsson
2021-1-11
Simplest way might be to use VideoReader:
vidObj = VideoReader('Your-video.mp4');
Frame1 = read(vidObj,1);
idx1toExtract = 12:27:size(Frame1,1);
idx2toExtrace = 17:37:size(Frame1,2);
for frameNR = vidObj.NumFrames:-1:1
vidFrame = read(vidObj, frameNR);
Couple_of_timeseries(:,:,frameNR) = vidFrame(idx1toExtract,idx2toExtract);
end
% Plot the time-series for one pixel:
plot(squeeze(Couple_of_timeseries(2,4,:)))
You'll have to generate an array for the time of the frames from the FrameRate or CurrentTime information in vidObj. For much of the remaining processing I typically cast the data from uint8 to double as soon as possible.
HTH
3 个评论
garima sharma
2021-1-12
Bjorn Gustavsson
2021-1-13
Which matlab-version are you using? In my 2020a version vidObj has these properties.
garima sharma
2021-1-13
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2021-1-11
2021-1-13
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