The possibility of making \$138,000 from shredded banknote pieces using
  computer vision
Chung To Kong
Every country must dispose of old banknotes. At the Hong Kong Monetary
Authority visitor center, visitors can buy a paperweight souvenir full of
shredded banknotes. Even though the shredded banknotes are small, by using
computer vision, it is possible to reconstruct the whole banknote like a jigsaw
puzzle. Each paperweight souvenir costs \$100 HKD, and it is claimed to contain
shredded banknotes equivalent to 138 complete \$1000 HKD banknotes. In theory,
\$138,000 HKD can be recovered by using computer vision. This paper discusses
the technique of collecting shredded banknote pieces and applying a computer
vision program.