대한전자공학회논문지SP (Journal of the Institute of Electronics Engineers of Korea SP)

대한전자공학회 (The Institute of Electronics and Information Engineers)
권호 표지

정지영상에서 원하는 PSNR에 대한 DCT평면에서 삽입될 워터마크 길이의 계산

Computation of the Length of Watermarks to be Inserted in the DCT domain for the specified PSNR of Still Image

  • 발행 : 2004.03.01
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초록

본 논문에서는 정지 영상의 원하는 PSNR을 만족하도록 삽입될 워터마크의 길이를 DCT 평면에서 계산하는 방법을 제안하였다. DCT의 에너지 관계를 이용하여, 삽입될 워터마크의 길이를 DCT 평면에서 직접 계산하는 식을 유도하였다. 여러 개의 실험 영상에 대해 실험결과를 통하여 제안한 방법의 효용성을 입증하였다.

In this paper, we propose a method for calculation of the length of watermarks to be inserted in the discrete cosine transform (DCT) domain for the specified peak signal to noise ratio (PSNR) of still image. Using the energy relationship of the DCT we derive the equation that directly computes the length of watermarks to be inserted in the DCT domain. Experimental results with several test images show the effectiveness of the proposed method.

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참고문헌

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