How to add and delete text on certain frames in a matlab movie?

Hi all, I have managed to read and display text within a running AVI video file, but now i want to only add text to certain frames...e.g frame 1-20 and 30-40....is there any way i can i can add text from one frame to another instead of it displaying throughout the whole video.

thank you.

Title_={'Smile'};
hText = text(x,y,'string');
imshow(Background);     
text(40,100,Title_{1},'Color','r','FontWeight','Bold','FontSize',40);
delete(htext);

Answer 1

[Walter Roberson]

http://www.mathworks.com/matlabcentral/fileexchange/31187-label-image

If you have the Computer Vision toolbox then you can use inserttext()

(Note: you might find references to imtext() in postings; those references are either mistakes or obsolete and inserttext() is the correct name at the moment.)

[Anand]

Thank you for the reply, i am already using the text() function to display text in the video which already works, so i dont need to use insertText()....the link you provided doesn't show how i would display text in different frames...im sure its just 1 or 2 lines of code....do you know how i would do this...ive searched for hours on the net and on this this website but cant find a solution.... im sure an expert like yourself would understand this, im a beginner in matlab.