Image Watermarking Algorithm using Spatial Encryption

공간적 암호화를 사용하는 영상 워터마킹 기법

  • Jung, Soo-Mok (Division of Computer Mechatronics Engineering, Sahmyook Univ)
  • 정수목 (삼육대학교 컴퓨터메카트로닉스공학부)
  • Received : 2019.11.15
  • Accepted : 2019.12.10
  • Published : 2020.02.29


In this paper, a technique for securely concealing the watermark, which is intellectual property information, in the image pixel LSB using spatial encryption is proposed. The proposed watermarking technique can be effectively used to protect intellectual property of images. The proposed technique can be used to extract watermark without loss from the stego-image, which is a hidden image of spatially encrypted watermark. The experimental results confirmed the superiority of the proposed technique. As a result of performing watermarking using the proposed technique, the image quality of the stego-image is higher than 51 dB, so humans cannot visually recognize the presence of a watermark. Due to the watermark is spatially encrypted, the security of the watermark is excellent.

본 논문에서는 공간적 암호화를 사용하여 영상에 소유권 정보인 워터마크를 영상 픽셀의 LSB에 안전하게 은닉하는 기법을 제안하였다. 제안된 워터마킹 기법은 영상의 지적재산권 보호에 효과적으로 사용될 수 있다. 제안된 기법을 사용하여 공간적으로 암호화된 워터마크를 은닉한 영상인 스테고 이미지로부터 워터마크를 손실 없이 추출할 수 있다. 실험을 통하여 제안 기법의 우수성을 확인하였다. 제안된 기법을 적용하여 워터마킹을 수행한 결과 영상인 스테고 이미지의 화질은 51dB이상으로 사람이 육안으로 워터마크의 존재여부를 인식할 수 없으며, 워터마크가 공간적으로 암호화되어 있기 때문에 워터마크의 보안성이 우수하다.



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