how can i get screenshot continuously by pressing key?

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a.s
a.s 2020-9-7
编辑： a.s 2020-9-8
This is my program that I can take a screenshot only once.
i want to take screenshot continuously in video by pressing key.
Can I do this by adding an index?
thanks before.
a = imaqhwinfo;
vid = videoinput('winvideo',1);
set(vid, 'FramesPerTrigger', Inf);
set(vid, 'ReturnedColorspace', 'rgb')
vid.FrameGrabInterval = 5;
start(vid)
while(vid.FramesAcquired<=200)
Key=get(gcf,'CurrentKey');
if Key =='s'
img1 = getsnapshot(vid);
break;
end

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回答（1 个）

KSSV
KSSV 2020-9-7
a = imaqhwinfo;
vid = videoinput('winvideo',1);
set(vid, 'FramesPerTrigger', Inf);
set(vid, 'ReturnedColorspace', 'rgb')
vid.FrameGrabInterval = 5;
start(vid)
while(vid.FramesAcquired<=200)
Key=get(gcf,'CurrentKey');
if strcmp(Key,'s')
img1 = getsnapshot(vid);
end
end
  1 个评论
a.s
a.s 2020-9-8
编辑：a.s 2020-9-8
thank you so much.....Now I want it to show me the frames every time I press the button. For example, I pressed the button 4 times.How can I see these 4 frames?

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