Journal ArticleDOI
Wavelet tree quantization for copyright protection watermarking
Shih-Hao Wang,Yuan-Pei Lin +1 more
TLDR
This paper proposes a wavelet-tree-based blind watermarking scheme for copyright protection that embeds each watermark bit in perceptually important frequency bands, which renders the mark more resistant to frequency based attacks.Abstract:
This paper proposes a wavelet-tree-based blind watermarking scheme for copyright protection. The wavelet coefficients of the host image are grouped into so-called super trees. The watermark is embedded by quantizing super trees. The trees are so quantized that they exhibit a large enough statistical difference, which will later be used for watermark extraction. Each watermark bit is embedded in perceptually important frequency bands, which renders the mark more resistant to frequency based attacks. Also, the watermark is spread throughout large spatial regions. This yields more robustness against time domain geometric attacks. Examples of various attacks will be given to demonstrate the robustness of the proposed technique.read more
Citations
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Journal ArticleDOI
Combined DWT-DCT Digital Image Watermarking
TL;DR: An imperceptible and a robust combined DWT-DCT digital image watermarking algorithm that watermarks a given digital image using a combination of the Discrete Wavelet Transform (DWT) and thediscrete Cosine transform (DCT).
Journal ArticleDOI
A new wavelet based logo-watermarking scheme
TL;DR: A wavelet based logo-watermarking scheme for copyright protection of digital image using a visually meaningful gray scale logo as watermark is presented and is robust to wide variety of attacks.
Journal ArticleDOI
An Efficient Watermarking Method Based on Significant Difference of Wavelet Coefficient Quantization
TL;DR: The experimental results show that the proposed blind watermarking algorithm is quite effective against JPEG compression, low-pass filtering, and Gaussian noise; the PSNR value of a watermarked image is greater than 40 dB.
Journal ArticleDOI
An Overview of Digital Video Watermarking
TL;DR: This paper presents a review of the digital video watermarking techniques in which their applications, challenges, and important properties are discussed, and categorizes them based on the domain in which they embed the watermark.
References
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Journal ArticleDOI
Secure spread spectrum watermarking for multimedia
TL;DR: It is argued that insertion of a watermark under this regime makes the watermark robust to signal processing operations and common geometric transformations provided that the original image is available and that it can be successfully registered against the transformed watermarked image.
Journal ArticleDOI
A new, fast, and efficient image codec based on set partitioning in hierarchical trees
Amir Said,William A. Pearlman +1 more
TL;DR: The image coding results, calculated from actual file sizes and images reconstructed by the decoding algorithm, are either comparable to or surpass previous results obtained through much more sophisticated and computationally complex methods.
Book
JPEG: Still Image Data Compression Standard
TL;DR: This chapter discusses JPEG Syntax and Data Organization, the history of JPEG, and some of the aspects of the Human Visual Systems that make up JPEG.
Book
Wavelets and Subband Coding
Martin Vetterli,Jelena Kovacevic +1 more
TL;DR: Wavelets and Subband Coding offered a unified view of the exciting field of wavelets and their discrete-time cousins, filter banks, or subband coding and developed the theory in both continuous and discrete time.
Book ChapterDOI
Attacks on Copyright Marking Systems
TL;DR: A number of attacks are presented that enable the information hidden by copyright marks and other information in digital pictures, video, audio and other multimedia objects to be removed or otherwise rendered unusable.