Yes, they clearly thought thru the white-image issue: http://www.gettyimages.com/detail/photo/ice-extreme-close-up-royalty-free-image/78314149 http://www.gettyi

Yes, they clearly thought thru the white-image issue: http://www.gettyimages.com/detail/photo/ice-extreme-close-up-royalty-free-image/78314149 http://www.gettyimages.com/detail/photo/ice-extreme-close-up... The box is just a low-contrast region (not adaptive). But I still think there will be lots of conditions where it will be tough to read. http://www.gettyimages.com/detail/photo/chess-board-royalty-free-image/136492703 http://www.gettyimages.com/detail/photo/chess-board-royalty-...