A Contrast-Sensitive Visible Watermarking Scheme

Huang, Biao-Bing; Tang, Suhua

doi:10.1109/mmul.2006.23

Cited by 59 publications

(43 citation statements)

References 2 publications

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“…Huang and Tang [18] later presented a contrast sensitive visible watermarking scheme with the assistance of HVS. They utilized the contrast sensitive function (CSF) mask of the DWT domain with square function to determine the mask weights and at last they adjusted the scaling and embedding factors based on the block classification with the texture sensitivity of the HVS for watermark embedding.…”

Section: Digital Watermarkingmentioning

confidence: 99%

“…First, a host image (original image) directly embeds watermark in spatial domain or is transformed into frequency domain through the well-known spread spectrum approach [19], i.e., Discrete Fourier Transform (DFT), DCT, or DWT. However, the algorithms using transform domain approach develop more robust watermarking techniques than directly embedding watermark into the spatial domain [3,18]. Consequently, coefficients are passed through a perceptual analysis block that determines how strong the watermark in embedding algorithm can be, so that the resulting watermarked image is acceptable.…”

Section: Digital Watermarkingmentioning

confidence: 99%

“…Therefore, a visible watermarking technique should retain details of contents and ensure embedded patterns difficult or even hard to be removed, and no one could use watermarked data illegally. How to solve the conflict problem and to determine the best tradeoff between the intensity of embedded watermark and the perceptual translucence for adaptive visible watermark under intentional attacks is becoming a subject of importance [5,12,18]. In this article, we present a game-theoretic architecture to solve this gap by proposing the ACOCOA (adaptive content and contrast aware) algorithm that provides more flexible design for encoder to set the energy of embedding watermark.…”

Section: Digital Watermarkingmentioning

confidence: 99%

“…r l,θ is the perceptual weight in [18]. l is the DWT level and θ is the orientation, and NVF is the characteristic of the local image properties.…”

Section: Acceptable Image Qualitymentioning

confidence: 99%

“…In order to further improve the application of block classification by simply categorizing three type blocks in [18], the local and global characteristics in DWT domain is considered. In ACOCOA scheme, a stochastic image model for watermark embedding is adopted by using the NVF which characterizes the local image properties.…”

Section: Acceptable Image Qualitymentioning

confidence: 99%

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A game-theoretic architecture for visible watermarking system of ACOCOA (adaptive content and contrast aware) technique

Tsai

Liu

2011

EURASIP J. Adv. Signal Process.

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Digital watermarking techniques have been developed to protect the intellectual property. A digital watermarking system is basically judged based on two characteristics: security robustness and image quality. In order to obtain a robust visible watermarking in practice, we present a novel watermarking algorithm named adaptive content and contrast aware (ACOCOA), which considers the host image content and watermark texture. In addition, we propose a powerful security architecture against attacks for visible watermarking system which is based on game-theoretic approach that provides an equilibrium condition solution for the decision maker by studying the effects of transmission power on intensity and perceptual efficiency. The experimental results demonstrate that the feasibility of the proposed approach not only provides effectiveness and robustness for the watermarked images, but also allows the watermark encoder to obtain the best adaptive watermarking strategy under attacks.

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Section: Digital Watermarkingmentioning

confidence: 99%