Adding text over image/ Sending image to background

Hello,

I am trying to scan an image with 64x128 window. Each window runs an algorithm. the result is either Yes or No. I use

for i = i:4

if strcmpi(output,'Yes') 
    T = 'Y';
else 
    T = 'N';
end

 figure(1),imshow(I)
 text(colmn,roww,T,'fontsize',14);
 hold on;
endfor

to show if its either yes or no. Say for a big image I have four windows. each window should display Y or N over the image. First time the loop runs Y is shown, next time Y disappears (i.e goes behind the image ) and now N is shown. This goes on till the end. The last text shown is on the image rest of them are there but just behind it. Is there a simple way of sending the image to background so all the texts appear on the image.

Thankyou for cooperation.

Kamran