Digital Watermarking for 3D Polygonal Model Based on Wavelet Transform

1999 ◽  
Author(s):  
Hiroaki Date ◽  
Satoshi Kanai ◽  
Takeshi Kishinami
Keyword(s):  
Wavelet Transform ◽  
Digital Watermarking ◽  
Copyright Protection ◽  
Affine Transformation ◽  
Wavelet Coefficient ◽  
Original Data ◽  
Geometric Error ◽  
Digital Data ◽  
Cad Cam ◽  
Polygonal Model

Abstract Recently, much interest is being taken in a method to protect the copyright of digital data and prevent illegal duplication of it. However, in the area of CAD/CAM and CG, there are no effective ways to protect the copyright of the 3D geometric models. As a first step to solve this problem, a new digital watermarking method for 3D polygonal models is introduced in this paper. Watermarking is one of the copyright protection methods where an invisible watermark is secretly embedded into the original data. The proposed watermarking method is based on the wavelet transform (WT) and multi-resolution representation (MRR) of the polygonal model. The watermark can be embedded in the large wavelet coefficient vectors at various resolution levels of the MRR. This makes the embedded watermark imperceptible and invariant to the affine transformation, and also makes the control of the geometric error caused by the watermarking reliable.

Intelligence-Based Adaptive Digital Watermarking for Images in Wavelet Transform Domain

2016 ◽  
pp. 243-263
Author(s):  
V. Santhi ◽  
D. P. Acharjya
Keyword(s):  
Wavelet Transform ◽  
Literature Review ◽  
Digital Watermarking ◽  
Computational Intelligence ◽  
Copyright Protection ◽  
End Users ◽  
Multimedia Data ◽  
Transform Domain

Advances in technologies facilitate the end users to carry out unauthorized manipulation and duplication of multimedia data with less effort. Because of these advancements, the two most commonly encountered problems are (1) copyright protection and (2) unauthorized manipulation of multimedia data. Thus a scheme is required to protect multimedia data from those two above said problems. Digital Watermarking is considered as one of the security mechanisms to protect copyrights of multimedia data. The literature review reveals that the calculation of scaling and embedding parameters are not completely automated. In order to automate the procedure of calculating scaling and embedding parameters the computational intelligence need to be incorporated in the watermarking algorithm. Moreover the quality of the watermarked images could also be preserved by combining computational intelligence concepts. Thus watermarking schemes utilizing computational intelligence concepts could be called as intelligence based watermarking schemes and it is presented in this chapter in detail.

Transform Domain Techniques for Image Steganography

2018 ◽  
pp. 170-186 ◽  
Author(s):  
Siddharth Singh ◽  
Tanveer J. Siddiqui
Keyword(s):  
Wavelet Transform ◽  
Information Security ◽  
Copyright Protection ◽  
Image Steganography ◽  
Digital Data ◽  
Multimedia Technology ◽  
Transform Domain ◽  
Recent Advancement ◽  
Copyright Ownership ◽  
Shed Light

Recent advancement of multimedia technology has posed serious challenges to copyright protection, ownership, and integrity of digital data. This has made information security techniques a vital issue. Cryptography, Steganography, and Watermarking are three major techniques for securing information and ensuring copyright ownership. This chapter presents an overview of transform domain techniques for image steganography. The authors discuss the characteristics and applications of image steganography and briefly review Discrete Cosine and Wavelet transform-based image steganography techniques. They also discuss the various metrics that have been used to assess the performance of steganography techniques and shed light on the future of steganography.

scholarly journals Design and Implementation of Robust Digital Watermarking using Hybrid technique for Copyright Protection Digital data

2021 ◽  
Vol 12 (3) ◽  
pp. 4839-4845
Author(s):  
Lakshman Ji Et. al.
Keyword(s):  
Image Processing ◽  
Comparative Analysis ◽  
Digital Watermarking ◽  
Copyright Protection ◽  
High Frequency ◽  
Error Rates ◽  
Digital Data ◽  
Hybrid Technique ◽  
Scene Detection ◽  
Design And Implementation

In this research paper, we concerned with the creation of a comprehensive digital watermarking framework based on DWT. In order to improve imperceptibility and robustness, the watermark is inserted only in chosen frames. The picked frames are the frames in which a change of scene happens. The key objective, therefore, is to detect the correct transformation of the scene. The Scene Shift Detector identifies correct frames that have been modified using the successive histogram discrepancy process. Two schemes proposed using the same method of scene detection. Both suggested schemes achieve a good watermark rating with good (PSNR) valuesThere, Because the watermark integration is done exclusively on the scene with low and high frequency DWT subbands, the image processing assaults, geometric aggressions, JPEG compression, high normalised image attacks are immune,and low-bit error rates (BER). Comparative analysis of two algorithms is also carried out.

scholarly journals A Novel Video Watermarking Algorithm using DTCWT

2021 ◽  
Vol 9 (VI) ◽  
pp. 1629-1634
Author(s):  
Sridevi Tumula
Keyword(s):  
Digital Watermarking ◽  
Copyright Protection ◽  
Video Watermarking ◽  
Multimedia Data ◽  
Digital Data ◽  
Robust Watermarking ◽  
Complex Wavelet Transform ◽  
Digital Multimedia ◽  
New Novel ◽  
Audio Data

In this paper a new novel color video watermarking algorithm has been proposed using Dual Tree Complex Wavelet Transform (DTCWT). Digital watermarking is an emerging technology for copyright protection for digital multimedia data. Now-a-days a lot of digital data are exchanged in the internet, so to protect the digital multimedia data, digital watermarking is used, the data may be an image or video or an audio data. The main objective of this paper is to maintain perceptivity of digital video and design a robust watermarking algorithm and maintaining the tradeoff between robustness and perceptivity.

Intelligence-Based Adaptive Digital Watermarking for Images in Wavelet Transform Domain

Biometrics ◽  
2017 ◽  
pp. 1483-1505
Author(s):  
V. Santhi ◽  
D. P. Acharjya
Keyword(s):  
Wavelet Transform ◽  
Literature Review ◽  
Digital Watermarking ◽  
Computational Intelligence ◽  
Copyright Protection ◽  
End Users ◽  
Multimedia Data ◽  
Transform Domain

Advances in technologies facilitate the end users to carry out unauthorized manipulation and duplication of multimedia data with less effort. Because of these advancements, the two most commonly encountered problems are (1) copyright protection and (2) unauthorized manipulation of multimedia data. Thus a scheme is required to protect multimedia data from those two above said problems. Digital Watermarking is considered as one of the security mechanisms to protect copyrights of multimedia data. The literature review reveals that the calculation of scaling and embedding parameters are not completely automated. In order to automate the procedure of calculating scaling and embedding parameters the computational intelligence need to be incorporated in the watermarking algorithm. Moreover the quality of the watermarked images could also be preserved by combining computational intelligence concepts. Thus watermarking schemes utilizing computational intelligence concepts could be called as intelligence based watermarking schemes and it is presented in this chapter in detail.

Transform Domain Techniques for Image Steganography

2014 ◽  
pp. 245-259 ◽  
Author(s):  
Siddharth Singh ◽  
Tanveer J. Siddiqui
Keyword(s):  
Wavelet Transform ◽  
Information Security ◽  
Copyright Protection ◽  
Image Steganography ◽  
Digital Data ◽  
Multimedia Technology ◽  
Transform Domain ◽  
Recent Advancement ◽  
Copyright Ownership ◽  
Shed Light

Recent advancement of multimedia technology has posed serious challenges to copyright protection, ownership, and integrity of digital data. This has made information security techniques a vital issue. Cryptography, Steganography, and Watermarking are three major techniques for securing information and ensuring copyright ownership. This chapter presents an overview of transform domain techniques for image steganography. The authors discuss the characteristics and applications of image steganography and briefly review Discrete Cosine and Wavelet transform-based image steganography techniques. They also discuss the various metrics that have been used to assess the performance of steganography techniques and shed light on the future of steganography.

scholarly journals A Highly Secure and Robust Copyright Protection Method for Grayscale Images using DWT-SVD

2019 ◽  
Vol 8 (3) ◽  
pp. 7284-7288
Keyword(s):  
Digital Watermarking ◽  
Copyright Protection ◽  
Experimental Results ◽  
Digital Data ◽  
Potential Solution ◽  
Host Image ◽  
Protection Method ◽  
Watermark Embedding ◽  
Selection Of ◽  
Grayscale Images

Digital watermarking has emerged as a potential solution to copyright-related issues of digital data. A novel, highly secure robust digital watermarking method using DWT-SVD is presented in this paper. Instead of using the conventional watermark embedding process where the watermark gets embedded over the entire host image, the coefficients for embedding the watermark inside the host image has been identified in this proposed method. Such selection of pixels used for insertion of watermark makes this algorithm highly secure, robust, and imperceptible. The experimental results demonstrate the efficiency of the proposed method in aspects of high robustness and good imperceptibility

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