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Multiple Barcode Watermarking Technique for Improve Robustness and Imperceptibility

강인성과 비지각성 향상을 위한 다중 바코드 워터마킹 기법

  • Seo, Jung-Hee (Department of Computer Engineering, Tongmyong University) ;
  • Park, Hung-Bog (Department of Computer Engineering, Pukyong National University)
  • Received : 2016.04.28
  • Accepted : 2016.05.16
  • Published : 2016.09.30

Abstract

Digital watermarking is tried to get an optimum tradeoffs between its performance characteristics, robustness, transparency and capacity. This paper is, therefore, suggesting a watermarking technique that builds multiple barcodes in various frequency bands to implement embedded watermarks that is imperceptible and robust against various attacks. Even though a watermark technique with duplicated barcode watermarks embedded in various frequency bands can satisfy robustness as there is high possibility that watermarks embedded in an image remains after various attacks, the duplicated barcode data can weaken imperceptibility. Thus, to satisfy the conflicting characteristic requirements of watermarks, robustness and imperceptibility, different barcode data is embedded in each frequency band. The test shows that ownership authentication with the technique suggested in this thesis does not require specialized hardware, and extracted watermarks can be easily identified through a mobile barcode scanner app, which allows low complexity, low cost and swift identification.

디지털 워터마킹은 강인성과 투명성, 용량에 대한 세 개의 서로 직교하는 성능 특성으로 간주되는 최적의 균형 값을 찾기 위해 시도된다. 따라서 본 논문은 다양한 공격에 강인하고 비지각적인 워터마크 내장을 위해서 여러 주파수 대역에 다중-바코드를 내장하는 워터마크 기법을 제안한다. 그리고 다양한 주파수 대역에 중복된 바코드 워터마크 내장 기법은 다양한 공격에 영상의 내장된 워터마크가 남아있을 가능성이 높아 강인성을 만족할 수 있으나 많은 양의 중복된 바코드 데이터의 내장은 비지각성에서 문제가 발생할 수 있다. 따라서 워터마크의 요구 조건인 강인성과 비시각성의 서로 상반되는 특징을 만족시키기 위해서 주파수 대역별 바코드 데이터의 값을 변경하여 영상에 포함시킨다. 실험 결과, 본 논문에서 제안된 기법의 소유권 인증은 특별한 하드웨어 장치를 요구하지 않고 추출된 워터마크를 모바일 앱의 바코드 스캐너를 통해서 손쉽게 인증하여 낮은 복잡도와 저비용, 빠른 검증을 지원한다.

Keywords

References

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