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421
Segmentation and Classification of Vowel Phonemes of Assamese Speech Using a Hybrid Neural Framework
Published 2012-01-01“…The proposed algorithm shows a high recognition performance in comparison to the conventional Discrete Wavelet Transform (DWT) based segmentation.…”
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422
Validation of Two Nonlinear System Identification Techniques Using an Experimental Testbed
Published 2004-01-01“…The identification of a nonlinear system is performed using experimental data and two different techniques, i.e. a method based on the Wavelet transform and the Restoring Force Surface method. …”
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423
Intelligent Fault Diagnosis of Machines Based on Adaptive Transfer Density Peaks Search Clustering
Published 2021-01-01“…To enhance the accuracy of autonomous diagnosis using unlabelled mechanical faults data, a novel intelligent diagnosis algorithm has been developed for rotating machinery based on adaptive transfer density peak search clustering. Combined with the wavelet packet energy feature extraction algorithm, the proposed algorithm can enhance the computational accuracy and reduce the computational time consumption. …”
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424
Video Multiple Watermarking Technique Based on Image Interlacing Using DWT
Published 2014-01-01“…In this technique, three-level discrete wavelet transform (DWT) is used as a watermark embedding/extracting domain, Arnold transform is used as a watermark encryption/decryption method, and different types of media (gray image, color image, and video) are used as watermarks. …”
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425
Molecular Image Segmentation Based on Improved Fuzzy Clustering
Published 2007-01-01“…The second stage is the texture energy characterization using a Gabor wavelet method. The third stage is introducing spatial constraints provided by the denoising data and the textural information into the two-dimensional fuzzy clustering. …”
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426
ADI-MRTD Algorithm for Periodic Structures Analysis
Published 2018-01-01“…By applying the multiresolution analysis in accordance with wavelet theory, the spatial sampling rate of the conventional finite-difference time-domain (FDTD) is significantly reduced by the MRTD method. …”
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427
Benchmarking of Multispectral Pansharpening: Reproducibility, Assessment, and Meta-Analysis
Published 2024-12-01“…As a major outcome of this study, an improved version of the additive wavelet luminance proportional (AWLP) pansharpening algorithm offers all of the favorable characteristics of an ideal benchmark, namely, performance, speed, absence of adjustable running parameters, reproducibility of results with varying datasets and landscapes, and automatic correction of the path radiance term introduced by the atmosphere. …”
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428
Constructive Existence of (1,1)-Solutions to Two-Point Value Problems for Fuzzy Linear Multiterm Fractional Differential Equations
Published 2019-01-01“…Our existence result is based on Banach fixed point theorem and the approximate solution of our problem is obtained by applying the Haar wavelet operational matrix.…”
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429
Thirty-Year Periodicity of Cosmic Rays
Published 2012-01-01“…Results were obtained by using the wavelet transformation spectral technique, signal reconstruction by autoregressive spectral analysis (ARMA), and the Lomb-Scargle periodogram method. …”
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430
Hybrid Models for Weather Parameter Forecasting
Published 2021-01-01“…It is observed that, on the basis of error comparison and time taken by the models, the hybrid wavelet-neuro-RBF model gives better results as compared to the other models due to lower values of determined errors, better performance, and lesser time taken. …”
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431
An Analysis Method for Time-, Frequency-, and Energy-Domain Characteristics of Downhole Microseismic Signals and Its Application
Published 2021-01-01“…Based on SOS microseismic (MS) monitoring system of a certain mine, time-, frequency-, and energy-domain characteristics of MS signals are analyzed by comprehensively applying one-dimensional discrete Fourier transform (DFT) and one-dimensional discrete wavelet transform (DWT). The technology is employed to explore MS signals from incident and transmitted waves on the fault plane. …”
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432
Analysis of Cavitation Instabilities in a Four-Blade Inducer
Published 2012-01-01“…The objective of the present paper is the understanding of the physical phenomena associated to these frequencies. Therefore, wavelet decomposition, flow visualizations, and direct analysis of the high-frequency force, moment, and pressure signals are applied. …”
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433
Stego on FPGA: An IWT Approach
Published 2014-01-01“…A reconfigurable hardware architecture for the implementation of integer wavelet transform (IWT) based adaptive random image steganography algorithm is proposed. …”
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434
Spatial Images Feature Extraction Based on Bayesian Nonlocal Means Filter and Improved Contourlet Transform
Published 2012-01-01“…Experimental results both on standard images and spatial images confirm that the proposed algorithm yields significantly better performance than nonsubsampled wavelet transform, contourlet, and curvelet approaches.…”
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435
Feasibility Study on Crack Detection of Pipelines Using Piezoceramic Transducers
Published 2013-10-01“…In the test, eight different operating conditions were tested in which one artificial crack was created ranging from 0 mm to 10.5 mm. A wavelet packet-based crack severity index was also built to quantitatively identify the pipeline damage condition at various crack depths.…”
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436
Improved Image Compression Scheme Using Hybrid Encoding Algorithm
Published 2019-10-01“…In this work, an effective compression method for hybrid images is proposed based on the discrete wavelet transformation and hybrid encoding algorithm (Huffman and SPIHT). …”
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437
Recognition of life-threatening arrhythmias by ECG scalograms
Published 2024-02-01“…A feature of our approach is the use of a unique technique for converting ECG signals into images (scalograms) using a continuous wavelet transform. For arrhythmia classification, the AlexNet neural network with a well-known deep learning architecture, which is commonly used in image classification tasks, is used. …”
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438
Bearing Fault Signal Analysis Based on an Adaptive Multiscale Combined Morphological Filter
Published 2020-01-01“…Both simulation and experimental results show that the adaptive multiscale combined morphological filter can remove noise more thoroughly and retain details of the fault signal better than the dual-tree complex wavelet filter, traditional morphological filter, adaptive singular value decomposition method (ASVD), and improved switching Kalman filter (ISKF). …”
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439
Image Denoising Using Nonlocal Means with Shape-Adaptive Patches and New Weights
Published 2021-01-01“…To efficiently reduce the noise in the image, a novel image denoising strategy is proposed, which exploits both nonlocal self-similarity and local shape adaptation. With wavelet thresholding, the residual image in method noise, derived from the initial estimate using nonlocal means (NLM), is exploited further. …”
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440
Experimental Investigation on the Friction-Induced Vibration with Periodic Characteristics in a Running-In Process under Lubrication
Published 2021-01-01“…The FIV signal with periodic characteristics under lubrication was identified with the help of the squeal signal induced in an oil-free wear experiment and then extracted by the harmonic wavelet packet transform (HWPT). The variation of the FIV signal from running-in wear stage to steady wear stage was studied by its root mean square (RMS) values. …”
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