Detecting Tampered Cheque Images Using Difference Expansion Based Watermarking with Intelligent Pairing of Pixels

Conference paper
Part of the Smart Innovation, Systems and Technologies book series (SIST, volume 43)

Abstract

Image based cheque clearing systems enable faster clearing of cheques in banking system. But the paying bank should receive an unaltered image of a genuine cheque so that its decision does not support a case of fraud. The method, proposed in this paper, successfully detects tampered cheque images. The proposed method is based on a fragile and reversible watermarking technique, namely difference expansion based watermarking. But the major problem with these kinds of reversible watermarking techniques is that the pixel values in the watermarked image often fall outside the dynamic range of the image. This paper demonstrates how intelligent pairing of pixels can solve this problem. Therefore, the revised difference expansion based watermarking (based on intelligent pixel pairing) successfully detects tampered images of cheques.

Keywords

Document tamper detection Cheque fraud detection Watermarking Reversible watermarking 

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Copyright information

© Springer India 2016

Authors and Affiliations

  1. 1.University of HyderabadHyderabadIndia
  2. 2.Institute for Development and Research in Banking Technology (IDRBT)HyderabadIndia

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