Original images corresponding to the ones displayed on this page were obtained from flickr (http://www.flickr.com/)
and are under the Creative Commons BY-SA 2.0 Licence (http://creativecommons.org/licenses/by-sa/2.0/).
Overlaid squares indicate the Finder Patterns (FIPs), present in three corners of any QR code, that have been
detected by the Viola-Jones classifier used in our approach. Line segments indicate pairs of candidate FIPS
that have been considered as potentially being part of a same QR code. The red line segments indicate
those that have been considered as part of QR codes.