Steganographic data hiding in image processing using predictive differencing

• Autorzy: Weng, C. Y. , Tso, H. K. , Wang, S. J.
• Języki publikacji: EN

Abstrakty

EN

In this paper, we propose a stenography scheme based on predictive differencing to embed data in a grey-image. In order to promote the embedding capacity of pixel-value differencing (PVD), we use differencing between a predictive value and an input pixel as the predictive differencing to embed the message where a predictive value is calculated by using various predictors. If the predictive differencing is large, then it means that the input pixel is located in the edge area and, thus, has a larger embedding capacity than the pixel in a smooth area. The experimental result shows that our proposed scheme is capable of providing greater embedding capacity and high quality of stego-images then previous works. Furthermore, we have also applied various predictors to evaluate our proposed scheme.

Słowa kluczowe

EN

pixel-value differencing (PVD); prediction error; neighbouring pixel; high image quality

• Czasopismo: Opto-Electronics Review
• Rocznik: 2012
• Tom: Vol. 20, No. 2
• Strony: 126-133
• Opis fizyczny: Bibliogr. 23 poz., il., wykr.

Twórcy

autor

Weng, C. Y.

autor

Tso, H. K.

autor

Wang, S. J.,

• Department of Computer Science and Engineering, National Sun-sen University, Kaohsiung, Tajwan, 804 R.O.C.

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