Supplementary Material

Paper "Fast QR Code Detection in Arbitrarily Acquired Images"

by L. F. F. Belussi and N. S. T. Hirata, IME/USP
accepted in SIBGRAPI 2011

Original images corresponding to the ones displayed on this page were obtained from flickr (
and are under the Creative Commons BY-SA 2.0 Licence (

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.

Last update: July 11, 2011