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

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

Answer 1

[Dishant Arora]

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.

[sandeep]

why for lop is 1:5 what does 5 means here? thanks

[David Young]

See doc colon.

[sandeep]

i meant why he is running loop 5 times .Is something related to 5

[David Young]

It's just meant as an example. You can run the loop as many times as you need to.

[sandeep]

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]

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.