Book ChapterDOI
A Novel Watermarking Technique for Multimedia Security
Satendra Pal Singh,Gaurav Bhatnagar +1 more
- pp 89-118
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TLDR
This chapter presents a robust and secure framework for multimedia security using digital watermarking based on dynamic stochastic resonance (DSR), which effectively utilizes the noise introduced during the attacks to enhance the robustness and authenticity of the watermark.Abstract:
This chapter presents a robust and secure framework for multimedia security using digital watermarking. In the proposed scheme, a cover image is transformed into frequency domain based on all phase discrete bi-orthogonal transform (APDBT) followed by singular value decomposition. A gray-scale watermark is then embedded by modifying the singular values. For watermark extraction, a new procedure based on dynamic stochastic resonance (DSR) is employed. The proposed DSR based extraction effectively utilizes the noise introduced during the attacks to enhance the robustness and authenticity of the watermark. A detailed experimental analysis is finally conducted to demonstrate the robustness and efficiency of the proposed scheme against a variety of attacks.read more
References
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Book ChapterDOI
HEVC Transform and Quantization
TL;DR: HEVC specifies two-dimensional transforms of various sizes from 4 × 4 to 32 × 32 that are finite precision approximations to the discrete cosine transform (DCT) and also supports frequency-dependent quantization by using quantization matrices for all transform block sizes.
Journal ArticleDOI
SPIHT‐based multiple image watermarking in NSCT domain
TL;DR: A multiple watermarking technique using combination of redundant discrete wavelet transforms (RDWT), non‐subsampled contourlet transform (NSCT), set partitioning in hierarchical tree (SPIHT), and singular value decomposition (SVD) is proposed to achieve high capacity, robustness, and imperceptibility.
Proceedings ArticleDOI
The all phase DFT filter
Zhengxin Hou,Xi Yang +1 more
TL;DR: In this article, the authors proposed a concept of all phase data space, and based on the DFT/IDFT filtering, a new type of zero-phase filter, called the all phase DFT (APDFT) filter is proposed.
Journal ArticleDOI
A New Measure of Watermarking Security: The Effective Key Length
Patrick Bas,Teddy Furon +1 more
TL;DR: A new measure of watermarking security, called the effective key length, which captures the difficulty for the adversary to get access to theWatermarking channel and shows that ISS offers a better security than CASS for a given robustness.
Proceedings ArticleDOI
A Novel Watermarking Scheme Based on Stochastic Resonance
Guangchun Wu,Zhengding Qiu +1 more
TL;DR: A Novel watermarking scheme based on stochastic resonance (SR) is introduced, and the median-frequency DCT components of all the 8times8 image blocks are randomly permuted to be an approximate white Gaussian noise.
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