Displaying video in a App Designer's tab

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Michal Wieczorek
Michal Wieczorek 2018-10-22
评论： Kevin Chng 2018-11-9
I want to display a live video preview in app made by App Designer, using preview(), but I don't want it to create seperate window, just display the image in one of the tabs. Is it even possible using App Designer. Do I have to create any objects to make it possible?
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Kevin Chng
Kevin Chng 2018-10-24
it does not affect framerate
You are right, it make me headache sometimes on the inconsistent updating frame rate. I use tic(),toc() and pause().
for loop
tic()
time=toc()
let say you wannt maintain it 0.1 updating rate
pause(0.1-time)
end
However it must ensure 0.1-time is not negative value.
How to make your updating rate faster?
In my memory, i use cla(axes,'reset') in the loop, clear some unused variables, and make the code in the loop more simple and straight forward.
Or,
sacrifice some of your frame to make your display look like faster in playing.
Or,
I heard system object may help, but i haven tried it.
Kevin Chng
Kevin Chng 2018-11-8
Michael Wieczorek,
If you want your video running faster, you may consider programmatically GUI instead of app designer.

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回答（1 个）

Ahmer Shahid
Ahmer Shahid 2018-11-4
I am using the above code but this very slowly works I want to run it fastly as a live camera. Thanks in advance.
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Ahmer Shahid
Ahmer Shahid 2018-11-8
Yes I am using App Designer and I want to preview camera on an axis.
Kevin Chng
Kevin Chng 2018-11-9
I'm not sure with other's opinion. But if you use programmatically GUI, it will be much more faster without the lag in app designer.
https://www.mathworks.com/matlabcentral/fileexchange/24861-41-complete-gui-examples

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