How do I perform time lapse image acquisition and save individual images?

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I want to perform time-lapse image acquisition, saving each acquired frame as a separate image.

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MathWorks Support Team
MathWorks Support Team 2021 年 3 月 5 日
編集済み: MathWorks Support Team 2021 年 2 月 25 日
Follow a modified form of the approach example is this example:
Instead of logging to disk, log data to memory. Use the FramesAcquiredFcn callback to save individual frames as images:
vid = videoinput('winvideo');
%% Do actual time-lapse acquisition
framerate = 17.5296; % Previously calculated according to example
capturetime = 30;
vid.FrameGrabInterval = 10;
vid.FramesPerTrigger = floor(capturetime * framerate / vid.FrameGrabInterval);
vid.FramesAcquiredFcnCount = 1; % Execute callback for each frame
vid.FramesAcquiredFcn = @saveFrame;
start(vid);
wait(vid, Inf);
function saveFrame(vid, event)
image = getdata(vid, 1);
imwrite(image, [num2str(vid.FramesAcquired) '.jpg']);
end

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