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

Question

shubham kumar gupta 2023-5-11

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1961729-how-to-save-volshow-data-config-as-fig-or-img-volumeviewer

回答： Edmund Pickering 2023-9-14

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

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Walter Roberson 2023-5-12

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

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Answer 1

Simon Chan 2023-5-12

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https://ww2.mathworks.cn/matlabcentral/answers/1961729-how-to-save-volshow-data-config-as-fig-or-img-volumeviewer#answer_1233564

移动：Matt J 2023-5-12

在 MATLAB Online 中打开

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);

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Simon Chan 2023-5-12

在 MATLAB Online 中打开

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 2023-5-14

thank you

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Answer 2

Matt J 2023-5-11

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1961729-how-to-save-volshow-data-config-as-fig-or-img-volumeviewer#answer_1233364

See this related thread,

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

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shubham kumar gupta 2023-5-14

thank you

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Answer 3

Edmund Pickering 2023-9-14

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1961729-how-to-save-volshow-data-config-as-fig-or-img-volumeviewer#answer_1309506

在 MATLAB Online 中打开

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