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Image Watermarking for Identification Forgery Prevention

신분증 위변조 방지를 위한 이미지 워터마킹

  • 나지하 (연세대학교 전기전자공학과) ;
  • 김종원 (상명대학교 저작권보호학과) ;
  • 김재석 (연세대학교 전기전자공학과)
  • Received : 2011.09.19
  • Accepted : 2011.11.02
  • Published : 2011.12.28

Abstract

In this paper, a new image watermarking algorithm is proposed which can hide specific information of an ID card's owner in photo image for preventing ID's photo forgery. Proposed algorithm uses the image segmentation and the correlation peak position modulation of spread spectrum. The watermark embedded in photo ensures not only robustness against printing and scanning but also sufficient information capacity hiding unique number such as social security numbers in small-sized photo. Another advantage of proposed method is extracting accurate information with error tolerance within some rotation range by using $2^h{\times}2^w$ unit sample space not instead $1{\times}1$ pixels for insertion and extraction of information. 40 bits information can be embedded and extracted at $256{\times}256$ sized ID photo with BER value of 0 % when the test condition is 300dpi scanner and photo printer with 22 photos. In conclusion, proposed algorithm shows the robustness for noise and rotational errors occured during printing and scanning.

Keywords

Watermarking;ID forgery Detection;Peak Position Modulation;Spread Spectrum

References

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Cited by

  1. A Method for Detecting Program Plagiarism Comparing Class Structure Graphs vol.13, pp.11, 2013, https://doi.org/10.5392/JKCA.2013.13.11.037