Get figures and use them to build a video.avi

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

Answer 1

[KSSV]

    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);

[KSSV]

Davide Magnelli commented:

Thanks a lot!!!!!

[KSSV]

Dongik Lee commented: Thanks a lot!!!!!

[homayoon komijani]

thanks alot

[Dharaneedharan Arumugam]

I am using the same type of code but I am getting a frame error at the folowing line:

I have tried minimizing the frame size of figure but the same error persists!

>> 
Error using VideoWriter/writeVideo (line 383)
Frame must be 119 by 99

Error in tst (line 59)
    writeVideo(writerObj, frame);
 >>

[Benjamin Groisser]

responding to Dharaneedharan Arumugam in case someone else has this problem: you need to make sure your image doesn't change size after the first frame. Updating a plot (or especially in 3D) can change the field of view.

[Nicole Feist]

I get the error

```

Dot indexing is not supported for variables of this

type.

Error in alternateGetframe

Error in getframe (line 136)

x = alternateGetframe(parentFig, offsetRect,

scaledOffsetRect, includeDecorations);

Error in graph (line 41)

F(i) = getframe(gcf);

```

[Yoseph Tereda]

x=[0 0 199 99];

frame=getframe(gcf,x);

Answer 2

[Image Analyst]

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

[John Hatrick]

Love it thank you!

[Rohit Nandwani]

Thank You! :-)

Answer 3

[Leostar90]

Thanks for such a perfect answer