Parker asked . 2020-07-13

How do I extract individual frames while taking video input from a webcam?

Here's a snippet of the program for Fall Detection which analyses a video clip frame-by-frame :

while ~isDone(vid)               % vid = vision.VideoFileReader(vidname);    where vidname is the filename of the video clip
    pause(0.0001);
    frame =  step(vid);
    frameNo = frameNo+1;

How do I edit it so that instead of a video clip the input is taken from my webcam?

matlab, image processing

Expert Answer

Prashant Kumar answered . 2024-12-21 15:15:43

You just need to create a VideoDevice System object (say vidobj) and replace vid with vidobj :

% Construct a VideoDevice System object associated with the Winvideo adaptor with device ID of 1.
vidobj = imaq.VideoDevice('winvideo', 1);           
    
while true                     % The program will run as long as the webcam is on.
    pause(0.0001);
    frame =  step(vidobj);
    frameNo = frameNo+1;

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