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Robustness of the additive and multiplicative frequency decomposition multi-level method

R. P. Stevenson
1995 Computing  
Zusammenfassung Robustness of the Additive and Multiplicative Frequency Decomposition Multi-Level Method.  ...  Key words: Frequency decomposition, multi-level method, finite elements, hierarchical basis, additive and multiplicative Schwarz methods, subspace decomposition, robustness.  ...  For this reason, Hackbusch developed the Frequency Decomposition Multi-Level Method (FDMLM) ( [2, 3] ).  ... 
doi:10.1007/bf02238231 fatcat:asffpis7snhklj4znwywry574e

A hierarchical domain decomposition method for rigorous conductor modeling of signal integrity in multi-scale integrated circuits

Yang Shao, Zhen Peng, Jin-Fa Lee
2013 2013 IEEE MTT-S International Microwave Symposium Digest (MTT)  
Moreover, a hierarchical multi-level fast multiple method is adopted to address the low frequency issues particularly in IC applications.  ...  A frequency-domain multi-solver domain decomposition method is presented to accurately analyze signal integrity problems in multi-scale integrated circuits.  ...  To further accelerate the performance of the GCFIE method, a hierarchical multi-level fast multipole method (H-MLFMM) [5] is adopted to accelerate the matrix vector-multiplication (MVP) and reduce memory  ... 
doi:10.1109/mwsym.2013.6697703 fatcat:3lajf3ueere4jo7od4t2wurlom

Fidelity Analysis of Additive and Multiplicative Watermarked Images in Integrated Domain

S.K. Jayanthi, K Sridevi
2014 IOSR Journal of Computer Engineering  
This paper first embeds additive watermark in spatial domain and multiplicative watermark in frequency domain, then vice versa.  ...  The present paper proposes fidelity analysis of additive and multiplicative watermarked images in the integrated domain using Peak Signal to Noise Ratio measures.  ...  Psnr Values Of Dwt Domain Additive And Multiplicative Approach The PSNR values of frequency domain watermarked image using additive and multiplicative approach shows acceptable values and less image degradation  ... 
doi:10.9790/0661-16533641 fatcat:zlimejguzvcqbkbrdxcgg4s3ne

Robust Speaker Identification System Based on Wavelet Transform and Gaussian Mixture Model [chapter]

Wan-Chen Chen, Ching-Tang Hsieh, Eugene Lai
2005 Lecture Notes in Computer Science  
Some popular existing methods are also evaluated for comparison in this paper. The results show that the proposed method of feature extraction is more effective and robust than other methods.  ...  In addition, the performance of our method is very satisfactory even at low SNR.  ...  In this paper we propose an effective and robust extraction method for speech features based on time-frequency multi-resolution analysis.  ... 
doi:10.1007/978-3-540-30211-7_28 fatcat:hst5sckyarh7zeqq2auiclsb6m

Page 5666 of Mathematical Reviews Vol. , Issue 93j [page]

1993 Mathematical Reviews  
The author studies the influence of the number of levels and geometric aspects on the condition number of two-level and multi- level additive and multiplicative Schwarz methods.  ...  He also shows that the condition number of some multi-level additive Schwarz methods grows at most linearly with the number of levels (Theorem 4).  ... 

Dwt - Svd Based Multiple Image Watermarking Processes On Cloud Computing

C. Ananth, M. Karthikeyan, N. Mohananthini
2018 Zenodo  
The multiple watermarking is used to share the copyright of multiple users improves the robustness and high security. In the proposed work, multiple watermarks are embedded into the cover image.  ...  In the present work, the multiple watermarking techniques have been executed to present information security.  ...  Multi resolution analysis is the decomposition of an image into different sub images of different size resolution levels.  ... 
doi:10.5281/zenodo.1299961 fatcat:ymq4tsahtvhgrjrcxm57yzlj2q

Multi-Objective Genetic Algorithm Optimization for Image Watermarking Based on Singular Value Decomposition and Lifting Wavelet Transform [chapter]

Khaled Loukhaoukha, Jean-Yves Chouinard, Mohamed Haj Taieb
2010 Lecture Notes in Computer Science  
Experimental results show a much improved performance in term of transparency and robustness of the proposed method compared to others methods.  ...  To achieve the highest possible robustness without losing watermark transparency, multiple scaling factors (MSF) are used instead of single scaling factor (SSF).  ...  an additive or a multiplicative rule.  ... 
doi:10.1007/978-3-642-13681-8_46 fatcat:msgtrefma5fzncnsdsvslr4jb4

A novel feature descriptor based on the shearlet transform

William Robson Schwartz, Ricardo Dutra da Silva, Larry S. Davis, Helio Pedrini
2011 2011 18th IEEE International Conference on Image Processing  
Based on the idea of employing histograms to estimate the distribution of edge orientations and on the accurate multi-scale analysis provided by shearlet transforms, we propose a feature descriptor called  ...  Several feature extraction methods have been proposed, including the Histograms of Oriented Gradients (HOG), which captures edge information by analyzing the distribution of intensity gradients and their  ...  In addition, the shearlet transform is robust to noise and is accurate at fine scales, in contrast to methods based on local gradient estimation [9, 10] , such as HOG.  ... 
doi:10.1109/icip.2011.6115600 dblp:conf/icip/SchwartzSDP11 fatcat:tlyk37b6erhibnpivvitibz4vy

Contourlet based Edge Enhancement and Detection in SAR Images

Ms. Sarayu Vijayan, Ms. Alkha Mohan
2015 International Journal of Engineering Research and  
In this work, a robust multi-scale algorithm is developed using a combination of contourlet coefficients.  ...  From the DFB based image decomposition, the scaled information is combined by scale multiplication. This captures smooth contours and edges at any orientation.  ...  ACKNOWLEDGMENT We would like to take this opportunity to express our gratitude to all those who have guided in the successful completion of this endeavor.  ... 
doi:10.17577/ijertv4is051046 fatcat:4ufjxojhj5dkxphrydq5ct2ztq

Multiple STL decomposition in discovering a multi-seasonality of intraday trading volume

Josip Arneric
2021 Croatian Operational Research Review  
The seasonal and trend decomposition of a univariate time-series based on Loess (STL) has several advantages over traditional methods.  ...  By applying multiple STL decompositions of 15-minute trading volume observations, three seasonal patterns were discovered: hourly, daily, and monthly.  ...  Acknowledgements This work was fully supported by the Croatian Science Foundation under the project "Volatility measurement, modeling and forecasting" (UIP-2013-11-5199).  ... 
doi:10.17535/crorr.2021.0006 fatcat:u5wj66kb5fh7bggle3vkk73npi


C. Ananth, M. Karthikeyan, N. Mohananthini
2018 International journal of research - granthaalayah  
The multiple watermarking is used to share the copyright of multiple users improves the robustness and high security. In the proposed work, multiple watermarks are embedded into the cover image.  ...  In the present work, the multiple watermarking techniques have been executed to present information security.  ...  Multi resolution analysis is the decomposition of an image into different sub images of different size resolution levels.  ... 
doi:10.29121/granthaalayah.v6.i6.2018.1339 fatcat:6nxo3wwqy5fexgvynd2tvmha3q

Iterative frequency-domain seismic wave solvers based on multi-level domain-decomposition preconditioners [article]

Victorita Dolean and Pierre Jolivet and Stéphane Operto and Pierre-Henri Tournier
2020 arXiv   pre-print
We assess the convergence and the scalability of our method with the acoustic 3D SEG/EAGE Overthrust model up to a frequency of 20 Hz and discuss its efficiency for multi right-hand side processing.  ...  In this study, we use the Krylov subspace GMRES iterative solver combined with a multi-level domain-decomposition preconditioner.  ...  Acknowledgements This study was granted access to the HPC resources of SIGAMM ( and CINES/IDRIS under the allocation 0596 made by GENCI.  ... 
arXiv:2004.06309v1 fatcat:ekqq4d7ydrdlfpd3oogmwqpb4y

Comparative Study on Multi-focus Image Fusion Techniques in Dynamic Scene

Rajvi Patel, Manali Rajput, Pramit Parekh
2015 International Journal of Computer Applications  
Keywords Multi-focus image fusion; Spatial domain fusion; Transform domain fusion; In discrete wavelet transform (DWT) decomposition, the filters are specially designed so that successive layers of the  ...  With the increased development of technology, it is necessary to retrieve information from multi source images in order to produce a high quality fused image with spatial and spectral information.  ...  It produces some additive noise at some level of decomposition. Stationary Wavelet Transform (SWT) This method provides good result at level-2 of decomposition.  ... 
doi:10.5120/19190-0792 fatcat:icisvfbi2vdevh35yyyl467piy

Performance Comparison of single and multiple watermarking techniques

Mohananthini Natarajan, Yamuna Govindarajan
2014 International Journal of Computer Network and Information Security  
The different embedding methods are additive, multiplicative and hybrid watermarking with importance on its robustness versus the imperceptibility of the watermark.  ...  The experimental results show that the additive embedding method achieves better visual quality and robustness on multiple watermarking technique.  ...  Multi resolution analysis is the decomposition of an image into sub images of different size resolution levels.  ... 
doi:10.5815/ijcnis.2014.07.04 fatcat:itnfjf7zuvczbmr2ckcrhl3hgu

A robust SVD-based image watermarking using a multi-objective particle swarm optimization

K. Loukhaoukha, M. Nabti, K. Zebbiche
2014 Opto-Electronics Review  
Thus, in order to achieve the highest possible robustness and imperceptibility, multi-objective optimization of the multiple scaling factors is necessary.  ...  Experimental results of the proposed approach show both the significant improvement in term of imperceptibility and robustness under various attacks.  ...  method for multi−objective optimization [44] p, w and F 0 are the positive constants.  ... 
doi:10.2478/s11772-014-0177-z fatcat:ppy3mvwj3zfrvnj3yq2qjuvj6a
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