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!
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Risposte (2)
KALYAN ACHARJYA
il 11 Gen 2021
Modificato: KALYAN ACHARJYA
il 11 Gen 2021
Convert the video in series of images (frames)
Here
Is that OK?
Bjorn Gustavsson
il 11 Gen 2021
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 Commenti
Bjorn Gustavsson
il 13 Gen 2021
Which matlab-version are you using? In my 2020a version vidObj has these properties.
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