How to add text to a video in matlab?
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hi, can someone help me on how to add text to a video that is running on matlab, my teacher told me its very simple and just 1 or 2 lines of code. i think you have to use the insertText function but im not sure how to do it. basically all i want to do is to write some text in certain frames of the video. it would be outputted in the subplot below. can someone please help me on this problem.
subplot(2, 2, 3);
imshow(Background);
title('Detecting Expression...', 'FontSize', fontSize)
thankyou
回答(2 个)
Image Analyst
2014-4-24
With text(), the text shows up in the overlay above the image. I believe the insertText function of the Computer Vision System Toolbox "burns it into" the image, though I don't use that function. I use text() to display text over a live video all the time. Not sure what your problem is. imshow() dispalys a still image while preview() shows a live video from a video camera. How are you displaying your video?
2 个评论
Image Analyst
2014-4-25
Get the handle to the text when you display it, then delete it when you want it to disappear.
hText = text(x,y,str); % Create it.
delete(htext); % Delete it.
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