Results 131 to 140 of about 13,850 (187)

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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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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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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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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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
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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
openaire   +1 more source

Efficient Interfacing of DWT and EBCOT in JPEG2000

IEEE Transactions on Circuits and Systems for Video Technology, 2008
Discrete wavelet transform (DWT) and embedded block coder (BC) are two main modules in JPEG2000 compression system. Data transfer between the DWT and BC modules presents challenges due to difference in data format generated by the DWT and data format required by the BC module.
Amit Kumar Gupta, Saeid Nooshabadi, David S. Taubman   +2 more
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Uncalibrated stereo matching using DWT

Proceedings 15th International Conference on Pattern Recognition. ICPR-2000, 2002
This paper presents a hierarchical stereo matching strategy using the discrete wavelet transform (DWT). Both area- and feature-based methods are combined into a single process by taking advantage of the discrete wavelet decomposition. Image components extracted from the approximation, horizontal, and vertical channels of the decomposition are combined ...
Haiying Liu, Prabir Bhattacharya
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DWT-based stereoscopic image watermarking

SPIE Proceedings, 2011
Watermarking already imposed itself as an effective and reliable solution for conventional multimedia content protection (image/video/audio/3D). By persistently (robustly) and imperceptibly (transparently) inserting some extra data into the original content, the illegitimate use of data can be detected without imposing any annoying constraint to a ...
Chammem, Afef, Mitrea, Mihai, Prêteux, Françoise   +2 more
openaire   +1 more source

Filter Banks and DWT

2013
The study of digital signal processing normally concentrates on the design, realization, and application of single-input, single-output digital filters. There are applications, as in the case of spectrum analyzer, where it is desired to separate a signal into a set of sub-band signals occupying, usually nonoverlapping, portions of the original ...
K. K. Shukla, Arvind K. Tiwari
openaire   +1 more source