How to save volshow(data,config) as fig or img [volumeViewer]?

Hi, I was using this volshow() function from volume viewer i wanted to save the output as figure file or image of that figure.

I have exported the config file

I have the data

volshow() opens a window

h=volshow(data,config);
viewer = h.Parent;
hFig = viewer.Parent;

but hFig is blank

[Walter Roberson]

In my test, hFig is a figure with number [] and name '' -- but that does not mean that the figure is empty. It is a handle

Answer 1

[Simon Chan]

In case a new window is open after using function volshow, you should be able to find the figure object and save the image using function getframe as mentioned in the documentation.

vs = volshow(data);
obj = ancestor(vs,'figure','toplevel');
I = getframe(obj);
imshow(I.cdata);

[Simon Chan]

Here is my test:

clear; clc;
vs = volshow(randi(10,[256 256 100]));
vs.Parent.Position = [0 0 300 250];
obj = ancestor(vs,'figure','toplevel');
set(obj,'Position',[580 230 300 250]);
pause(5);
F = getframe(obj);
f2 = figure('Position',[880 230 300 250]);
ax2 = axes(f2);
imagesc(ax2,F.cdata);

[shubham kumar gupta]

thank you

Answer 2

[Matt J]

See this related thread,

https://www.mathworks.com/matlabcentral/answers/1960414-how-to-capture-the-view-in-volshow-as-an-image?s_tid=srchtitle

[shubham kumar gupta]

thank you

Answer 3

[Edmund Pickering]

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