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http://dx.doi.org/10.5392/JKCA.2011.11.12.552

Image Watermarking for Identification Forgery Prevention  

Nah, Ji-Hah (연세대학교 전기전자공학과)
Kim, Jong-Weon (상명대학교 저작권보호학과)
Kim, Jae-Seok (연세대학교 전기전자공학과)
Publication Information
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;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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