capturing the same frame
2 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Osita Onyejekwe
le 7 Avr 2017
Commenté : Osita Onyejekwe
le 10 Avr 2017
My frame is capturing the same beginning video frame in multiple figures. I want the multiple figure to be images of the video as it progrosses, not the same figure for multiple figures. Here is my code. Please fix it
obj = VideoReader('Climate.mp4');
for k = 1 : 5 %fill in the appropriate number
this_frame = read(obj, k);
thisfig = figure();
%thisfig = gcf;
thisax = axes('Parent', thisfig);
image(this_frame, 'Parent', thisax);
title(thisax, sprintf('Frame #%d', k));
end
0 commentaires
Réponse acceptée
Image Analyst
le 7 Avr 2017
So don't create a new figure each frame. How does this work:
obj = VideoReader('Climate.mp4');
for k = 1 : obj.NumberOfFrames
this_frame = read(obj, k);
imshow(this_frame);
title(sprintf('Frame #%d', k), 'FontSize', 14);
drawnow; % Force immediate repaint of screen.
pause(0.1); % Increase number to slow it down more.
end
11 commentaires
Image Analyst
le 7 Avr 2017
You need to think about the logic flow. This works just fine.
obj = VideoReader('Climate.mp4');
for k = 1 : obj.NumberOfFrames
this_frame = read(obj, k);
imshow(this_frame);
title(sprintf('Frame #%d', k), 'FontSize', 14);
drawnow; % Force immediate repaint of screen.
pause(0.1); % Increase number to slow it down more.
if rem(k, 5) == 0 % Ask every fifth frame
promptMessage = sprintf('Showing Frame #%d.\nDo you want to Continue processing,\nor Quit processing?', k);
titleBarCaption = 'Continue?';
buttonText = questdlg(promptMessage, titleBarCaption, 'Continue', 'Quit', 'Continue');
if strcmpi(buttonText, 'Quit')
break;
end
end
end
Plus de réponses (1)
Voir également
Catégories
En savoir plus sur Animation dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!