How to create a custom preview window for MATLAB webcam?

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I am using the webcam function from "MATLAB Support Package for USB Webcams" to acquire images from my webcam.
The preview function creates a standalone preview window, but how can I create a preview image in a custom window, GUI, or app?

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MathWorks Support Team
编辑:MathWorks Support Team 2024-9-10
To create a custom preview window for webcam you can use the following example as a starting point. This code creates a figure, axes, and image elements programmaticaly, but the same configuration would apply for an GUI or app created with GUIDE.
%% Example WEBCAM custom preview window for MATLAB R2017a %% List connected webcams webcamlist %% Connect to webcam c = webcam(1); %% Setup preview window fig = figure('NumberTitle', 'off', 'MenuBar', 'none'); fig.Name = 'My Camera'; ax = axes(fig); frame = snapshot(c); im = image(ax, zeros(size(frame), 'uint8')); axis(ax, 'image'); %% Start preview preview(c, im) setappdata(fig, 'cam', c); fig.CloseRequestFcn = @closePreviewWindow_Callback; %% Local functions function closePreviewWindow_Callback(obj, ~) c = getappdata(obj, 'cam'); closePreview(c) delete(obj) end
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Andrei
Andrei 2018-7-26
编辑:Andrei 2018-7-26
With the way webcam preview is currently working (as of MATLAB R2018a), you need to specifically assign the figure's CloseRequestFcn to a callback function which closes the figure with close(hFig) or delete(hFig) as in the example above, where hFig is the preview figure handle. If you are previewing multiple cameras in different figures, you also need to do this for the CloseRequestFcn of each of the multiple preview figures.

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