title: JPEG2000 : Can number of tiles in X direction be zero?
body: <p>According to JPEG2000 specs, Number of tiles in X and Y directions is calculated by following formula:</p>
  
  <p>numXtiles =  (Xsiz − XTOsiz)/ XTsiz
  &amp; 
  numYtiles =  (Ysiz − YTOsiz)/ YTsiz</p>
  
  <p>But it is not mentioned about the range of numXtiles or numYtiles.
  Can we have numXtiles=0 while numYtiles=250 (or any other value) ?</p>