Get figures and use them to build a video.avi

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Davide Magnelli
Davide Magnelli on 26 Feb 2018
Answered: Leostar90 on 31 Mar 2022
Hello, I have developed an algorithm that shows at every iteration a figure as follow:
figure
imshow(processo(:,:,1,i))
hold on
plot(X,Y,'o')
plot(X0,Y0,'o')
plot(X1,Y1,'o')
plot(X2,Y2,'o')
plot(X3,Y3,'o')
end
What I need is to save in an array each figure (i.e. imshow with each plot) and build an .avi video from them. Any suggestions?
Thanks in advance, Davide

Accepted Answer

KSSV
KSSV on 26 Feb 2018
for i = 1:N
figure(1)
imshow(processo(:,:,1,i))
hold on
plot(X,Y,'o')
plot(X0,Y0,'o')
plot(X1,Y1,'o')
plot(X2,Y2,'o')
plot(X3,Y3,'o')
hold off
F(i) = getframe(gcf) ;
drawnow
end
% create the video writer with 1 fps
writerObj = VideoWriter('myVideo.avi');
writerObj.FrameRate = 10;
% set the seconds per image
% open the video writer
open(writerObj);
% write the frames to the video
for i=1:length(F)
% convert the image to a frame
frame = F(i) ;
writeVideo(writerObj, frame);
end
% close the writer object
close(writerObj);
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More Answers (2)

Image Analyst
Image Analyst on 11 Sep 2018
For what it's worth, I'm attaching my demo for creating a video from different surfaces made with the surf() function.

Leostar90
Leostar90 on 31 Mar 2022
Thanks for such a perfect answer

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