Suman V Patgar¹, Rani K² and Vasudev T², ¹P.E.S College of Engineering, India and ²Maharaja Institute of Technology, India

Photocopy documents are very common in our normal life. People are permitted to carry and present photocopied documents to avoid damages to the original documents. But this provision is misused for temporary benefits by fabricating fake photocopied documents. Fabrication of fake photocopied document is possible only in 2nd and higher order recursive order of photocopies. Whenever a photocopied document is submitted, it may be required to check its originality. When the document is 1st order photocopy, chances of fabrication may be ignored. On the other hand when the photocopy order is 2nd or above, probability of fabrication may be suspected. Hence when a photocopied document is presented, the recursive order number of photocopy is to be estimated to ascertain the originality. This requirement demands to investigate methods to estimate order number of photocopy. In this work, a different approach based on probability distributions like normal, extreme values and exponential is proposed to estimate the recursive order number of the photocopied document under consideration. A detailed experimentation is performed on a generated data set and the method exhibits efficiency close to 84%.

fabricated photocopy documents, recursive order number, probability distributions