How can I continually update the UI Axes in App Designer to display images from a CMOS camera?

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Cody LaBelle
Cody LaBelle 2017-9-12
评论： karim botros 2022-1-26
I would like to create a video feed in the UI Axes in App Designer. At the moment, I am updating the CData of the figure, though I am having large lag times. The code that I am using runs quickly--in about 100ms--but the image on the UI Axes updates approximately every two seconds. Preferably, the video feed would run parallel so that I can also interact with my GUI simultaneously. Is there a way to use the UI Axes to run this type of figure?
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Cody LaBelle
Cody LaBelle 2017-9-15
编辑：Cody LaBelle 2017-9-15
I have used the drawnow function to update the axes, though it did not reduce the updating time. Also, I updated MATLAB to 2017b (pre-release) due to the fact that the drawnow functionality was added to the UI axes in 2017a. Unfortunately this did not help.
As a temporary work around, I am using an external figure to display my video feed, which runs very quickly.

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karim botros
karim botros 2018-3-7
编辑：karim botros 2022-1-24
it works in app designer
you can use global var if you want to use the object camera in another function
global cam
im=image(zeros(340,340,3),'Parent',app.UIAxes);
preview(cam,im);
setappdata(app.UIAxes, 'cam', cam);

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