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How to capture the view in volshow as an image?

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I have rendered a volume using volshow in viewer3d (shown below). I would like to save a capture of this view similarly to how I have taken a Windows screenshot below but without needing to use Windows screenshot so that I can automate my code to load in these volumes and output images of the desired view.
Print, saveas, and imsave do not seem to be working for this.

Accepted Answer

Matt J
Matt J on 9 May 2023
Edited: Matt J on 9 May 2023
  2 Comments
Lars Nelson
Lars Nelson on 9 May 2023
Thank you! I'm still interested as to whether or not there's a way to create an image in a figure of the current view so that you could utilize MATLAB's normal image saving options. Is this function the only way you can think of to do this?
Matt J
Matt J on 9 May 2023
Edited: Matt J on 9 May 2023
Yes. volshow is not part of the mainstream graphics system. I don't like it any more than you do.

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More Answers (1)

Matt J
Matt J on 12 May 2023
I'm still interested as to whether or not there's a way to create an image in a figure of the current view so that you could utilize MATLAB's normal image saving options.
This example shows how to do so with getframe:
  2 Comments
Lars Nelson
Lars Nelson on 12 May 2023
I also found a method by opening up a uifigure first and then placing the 3D viewer and volshow in that. That way you can use exportapp to capture an image.
Edmund Pickering
Edmund Pickering on 14 Sep 2023
Moved: Matt J on 14 Sep 2023
I have this working with the following code.
% create viewer
viewer = viewer3d(BackgroundColor="white", GradientColor=[0.5 0.5 0.5],Lighting="on",BackgroundGradient="off");
% volshow
volBone = volshow(stack_(180:400,1:240,1179:1309)>250,'colormap',[214 184 150]/255,Parent=viewer);
% capture frame
frame = getframe(viewer.Parent);
If running in a loop, capturing succesive frames, I've found this helpful
viewer = viewer3d(...)
pause(5) % pause to give viewer time to fully open
for i = 1:...
viewer.clear % clear previous
pause(1) % pause to clear
volshow(...)
frame = getframe(viewer.Parent);
writeVideo(v,frame)
end

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