Plot in Webcam-Live Image

Hi everybody,

In my GUI I display a video live out of cam in an UIAxes. My plan is to plot detected markers in the image. Right know I don't know how to overlay the image and the plots in the same axes. Does anyone know how to solve this problem?

Best regards.

[Alicia Wüst]

In addition here is my code:

if recognized_objects > 0

image(UIAXES,CURRENT_FRAME);

hold (UIAXES);

plot(UIAXES,CenterObjectsMatrix(:,1),CenterObjectsMatrix(:,2),'*r');

else

image(UIAXES, CURRENT_FRAME);

end

Answer 1

[Harikrishnan Balachandran Nair]

Hi,

From my understanding, you want to preview your live webcam Image on a UIAxes, and plot on the same UIAxes.

Inorder to get an idea on how to preview live webcam video in you GUI, you can refer to the following link

https://www.mathworks.com/matlabcentral/answers/439020-how-to-preview-live-video-in-app-designer-using-videoinput-and-preview

You can use the 'hold' and 'plot' functions to plot your markers on the same UIAxes as the image.

You may refer to the following similar questions as well :

https://www.mathworks.com/matlabcentral/answers/441148-plot-on-top-of-a-live-image-preview

https://www.mathworks.com/matlabcentral/answers/513981-how-do-i-display-an-image-in-app-designer-and-plot-lines-on-top