High DA Bookmarking - London 2012 Olympics. From an initial database of 100 images, 15 pairs were selected. http://highdabookmarking.com/story.php?title=london-2012-olympics-from-an-initial-database-of-100-images-15-pairs-were-selected--12 London 2012 Olympics. From an initial database of 100 images, 15 pairs were selected.London 2012 Olympics. From an initial database of 100 images, 15 pairs were selected. Each pair showed the same bag with/without a threat (see an example in Figure 1). A further 15 pairs were obtained by mirroring those images around their vertical and then their horizontal meridian. This introduced a balanc Tue, 06 Feb 2018 16:34:58 UTC en