Book ChapterDOI
Encryption Based Robust Watermarking in Fractional Wavelet Domain
Gaurav Bhatnagar,Balasubramanian Raman +1 more
- pp 375-416
TLDR
In this chapter, a robust watermarking technique based on encryption in fractional wavelet Domain is presented to improve the protection and authentication of the images.Abstract:
In this chapter, a robust watermarking technique based on encryption in fractional wavelet Domain is presented to improve the protection and authentication of the images. The core idea of the proposed watermarking scheme is to encrypt an image via fractional wavelet transform and then watermark is embedded in encrypted image by modifying the singular values. After embedding, watermarked encrypted image is decrypted with the help fractional wavelet transform to get the watermarked image. First, watermarked image is encrypted by same algorithm at the receiver’s end and then watermark is extracted by proposed watermark extraction algorithm. The feasibility of this method and its robustness against different kind of attacks are verified by computer simulations.read more
Citations
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Journal ArticleDOI
A novel fractional wavelet transform and its applications
TL;DR: In this paper, a novel fractional wavelet transform (FRWT) is proposed in order to rectify the limitations of the WT and the FRFT in the time-frequency domain.
Journal ArticleDOI
Discrete fractional wavelet transform and its application to multiple encryption
TL;DR: A novel encryption scheme is proposed for securing multiple images during communication and transmission over insecure channel by discretizing continuous fractional wavelet transform and chaotic maps.
Journal ArticleDOI
Generalized wavelet transform based on the convolution operator in the linear canonical transform domain
Deyun Wei,Yuan-Min Li +1 more
TL;DR: The generalized wavelet transform (GWT) as discussed by the authors is a time-frequency transformation tool based on the idea of the linear canonical transform (LCT) and is capable of representing signals in the time-fractional frequency plane.
Journal ArticleDOI
Multiresolution analysis and orthogonal wavelets associated with fractional wavelet transform
TL;DR: This paper develops multiresolution analysis associated with the FRWT and derives a construction of orthogonal wavelets for theFRWT, and some applications of the derived results are discussed.
Journal ArticleDOI
Fractional dual tree complex wavelet transform and its application to biometric security during communication and transmission
TL;DR: In this paper, biometric is chosen as the primary application and hence a new technique is proposed for securing biometrics during communication and transmission over insecure channel, i.e. the fractional dual tree complex wavelet transform (FrDT-CWT).
References
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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
The wavelet transform, time-frequency localization and signal analysis
TL;DR: Two different procedures for effecting a frequency analysis of a time-dependent signal locally in time are studied and the notion of time-frequency localization is made precise, within this framework, by two localization theorems.
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