Results 131 to 140 of about 11,364 (194)

2L-DWTS — Steganography technique based on second level DWT

2016 International Conference on Advances in Computing, Communications and Informatics (ICACCI), 2016
Steganography is a technique used to communicate a secret message secretly hidden in an innocuous cover. In this paper, a new image steganography technique 2L-DWTS is proposed. This technique, 2L-DWTS embeds secret message in the higher frequency components among the second level DWT components of the cover image.
Punam Bedi, Veenu Bhasin, Tarun Yadav
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The DWT Group Fingerprinting Scheme

2014 IEEE 12th International Conference on Dependable, Autonomic and Secure Computing, 2014
With the development of network and multimedia technique, the transfer of multimedia content becomes popular. The relations between distributors get hierarchical and diversified. As far as digital wholesale and retail are concerned, the traditional fingerprint which helps traitor tracing cannot achieve effective tracing of colluding middlemen ...
Yong Zhao, Aixin Zhang, Songnian Lu
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A common architecture for the DWT and IDWT

Proceedings of International Conference on Application Specific Systems, Architectures and Processors: ASAP '96, 2002
This paper presents an architecture which is equally efficient at computing both the discrete wavelet transform (the DWT) and the inverse discrete wavelet transform (the IDWT). Given the seemingly fundamental difference between the structure of a DWT filter bank and the structure of an IDWT filter bank, it is somewhat surprising that such an ...
Mohan Vishwanath, Robert Michael Owens
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DWT-based robust video fingerprinting

3rd European Workshop on Visual Information Processing, 2011
Video fingerprints are short features extracted from a video sequence in order to uniquely identify that visual content and its replicas. The present paper introduces a new DWT-based robust video fingerprinting method. In this respect, a characteristic set of wavelet coefficients is used as fingerprint.
Garboan, Adriana, Mitrea, Mihai, Prêteux, Françoise   +2 more
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A comparative study between DWT-ANFIS and DWT-SVM in ECG classification

2016 IEEE Region 10 Conference (TENCON), 2016
Electrocardiogram (ECG) signal shows the different electrical activities of the heart. Since manual analysis is tedious and time-consuming, an offline automated ECG analysis and classification scheme is proposed in this study. Using Discrete Wavelet Transform (DWT) as feature extraction, this comparative study focused on ECG classification between ...
Czarina Isabelle M. Cruz, Jastine P. Marasigan, Anna Patricia G. Perez, Joana Erika V. Pillejera, Nikka P. Veron, Angelo R. dela Cruz   +5 more
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Improving the DWT-LMS algorithm: boundary filter DWT matrix construction

Conference Record of The Twenty-Ninth Asilomar Conference on Signals, Systems and Computers, 2002
It has been shown that the discrete wavelet transform (DWT) domain least mean squares (LMS) algorithm increases the rate of convergence with low misadjustment noise and performs better than the discrete cosine transform (DCT) domain and unmodified LMS algorithms.
M.D. Konezny, S.S. Rao
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On the correlation of the DWT coefficients

Canadian Conference on Electrical and Computer Engineering 2004 (IEEE Cat. No.04CH37513), 2004
The discrete wavelet transform (DWT) can be considered as a nonuniform octave filter bank or as an orthonormal matrix transform. Although the correlations in the DWT domain are obtained readily from the original signal correlations in the latter perspective, the former is necessary as well in order to interpret the statistics.
null Jeong-Jin Lee, G.H. Freeman
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Hybrid DWT-SVD audio watermarking

2010 Fifth International Conference on Digital Information Management (ICDIM), 2010
Audio watermarking is a relatively new technology that aims to embed copyright information in audio signals as a proof of their ownership. The driving force behind this technology has been the ever-increasing illegal manipulation of genuine audio products released by the music industry.
Ali Al-Haj 0001, Christina Twal, Ahmad A. Mohammad   +2 more
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A Watermarking Algorithm Based on MA and DWT

2008 International Symposium on Electronic Commerce and Security, 2008
To efficiently protect the ownership of multimedia data with watermarking technology, a novel image watermarking algorithm based on discrete wavelet transform (DWT) and memetic algorithm (MA) is proposed in this paper. The watermark is embedded to subband coefficients of subimage which is extracted from the original image with DWT, and watermark ...
Xia Sun, Ziqiang Wang, Dexian Zhang
openaire   +1 more source