Hi Shuaibin,
I see you want a capture the output of the "volshow" function as an image so that you could create a video from the images showing the evolution of the volume.
You could use the "getframe" function to capture the current data as shown in the figure as a movie frame. The input to the "getframe" function is the figure object the output of "volshow" is using.
And then you can use the "frame2im" function to convert the frame object to rgb data.
For example, you could do as below
%vol is the volumetric data that you want to visualize
h = volshow(vol);
fig = h.parent.parent; %get the figure object
F = getframe(fig); %get the current frame
rgb = frame2im(F); %convert the frame to rgb data
To know more about "getframe" and "frame2im" functions, refer to the following documentation:
You can also refer to the "Create Animation of Rotating Volume" section from the following documentation. The example uses "getframe" function to generate a gif from the output of the "volshow" function:
Hope this Helps!
