Can I use UIAxes to stream live video from a camera and how?

Question

Huayan Wang 2018-2-6

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/381087-can-i-use-uiaxes-to-stream-live-video-from-a-camera-and-how

评论： Ahmer Shahid 2018-11-13

I am using R2017b App designer to develop an image acquisition program.

Anybody can tell me can I do it through the UIAxes component and how to do it? Or is there other way to make it happen with the App designer?

Thanks in advance!

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Jan 2018-2-6

Can you do what by an UIAxes? "Develop an image acquisition program" does not explain any details.

Huayan Wang 2018-2-6

Hi Jan,

Thanks for the quick reply.

I want to stream live video from a camera through the UIAxes component.

I used to do it with command preview(vidobj, himage) I tried preview(vidobj, app.UIAxes) in the app designer. But it didn't work. I want to know how to make the UIAxes stream live video from my camera.

Thank you!

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Answer 1

Prajith Chilummula 2018-2-23

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/381087-can-i-use-uiaxes-to-stream-live-video-from-a-camera-and-how#answer_306663

在 MATLAB Online 中打开

Please checkout the code snippet and inform whether it works.

vidobj = videoinput('winvideo');
triggerconfig(vidobj, 'manual');
start(vidobj)
while(vidobj.FramesAcquired <= 200)
    snapshot = getsnapshot(vidobj);
    imshow(mov,'Parent',app.UIAxes);
    drawnow limitrate
end
stop(vidobj)

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Ahmer Shahid 2018-11-13

I use this code It runs very slowly not like a live streaming and also when I close the GUI the camera is still open. Kindly help me to resolve this problem Thanks.

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