can I process on video which is live capturing by camera ?

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Dipten 2014-2-19

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https://ww2.mathworks.cn/matlabcentral/answers/116727-can-i-process-on-video-which-is-live-capturing-by-camera

评论： David Young 2014-11-17

采纳的回答： Dishant Arora

Hi,sir can i process (like, blob analysis, ) on input live video from camera ?

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Dishant Arora 2014-2-19

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you need to capture snapshots from live video in order to process them.

 vidobj  = videoinput('winvideo');
snapshot = getsnapshot('vidobj');
imagesc(snapshot);

and if you want to acquire multiple frames do this:

for i = 1:5
  snapshot = getsnapshot(vidobj);
  imagesc(snapshot);
end

you need to have Image acquisition toolbox.go through demos.

i am actually trying to capture a video being played on my laptop screen in minimized window. I do not wanna use videoreader('abcd.mp4'). I need to capture that part of screen where video is running. can u help me please here.

David Young 2014-11-17

I don't know how to do that. It was a bad idea to accept an answer that does not do what you need. You might need to ask a new question, but make clear exactly what you want to do, giving details of the program that is playing the video.

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