Results 11 to 20 of about 10,872 (311)

Optimal decomposition level of discrete, stationary and dual tree complex wavelet transform for pixel based fusion of multi-focused images [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2010
The fast development of digital image processing leads to the growth of feature extraction of images which leads to the development of Image fusion. The process of combining two different images into a new single image by retaining salient features from ...
Kannan Kanagaraj   +2 more
doaj   +1 more source

Characterizations of Continuous Fractional Bessel Wavelet Transforms

open access: yesMathematics, 2022
In this paper, we present a systematic study of the various characteristics and properties of some continuous and discrete fractional Bessel wavelet transforms. The method is based upon the theory of the fractional Hankel transform.
Hari M. Srivastava   +2 more
doaj   +1 more source

Multiple Crack Detection using Wavelet Transforms and Energy Signal Techniques

open access: yesFracture and Structural Integrity, 2020
Wavelet transforms are efficient tools for structural health monitoring (SHM) and damage detection. However, these methods are encountered with some limitations in practice.
Jalal Akbari   +2 more
doaj   +3 more sources

Condition Monitoring of Induction Machines: Quantitative Analysis and Comparison

open access: yesSensors, 2023
In this paper, a diagnostic procedure for rotor bar faults in induction motors is presented, based on the Hilbert and discrete wavelet transforms. The method is compared with other procedures with the same data, which are based on time–frequency analysis,
Michele Sintoni   +3 more
doaj   +1 more source

Exploring discrete wavelet transforms for bimodal speech recognition [PDF]

open access: yesSerbian Journal of Electrical Engineering
Discrete Wavelet Transforms (DWTs) provide time–frequency representations that are well suited for nonstationary signals such as speech. This study presents a comparison of four wavelet families (Daubechies, Symlets, Coiflets, and Biorthogonal) for ...
Marković Branko   +2 more
doaj   +1 more source

Investigation and Analysis of Sea Surface Temperature and Precipitation of the Southern Caspian Sea Using Wavelet Analysis

open access: yesAxioms, 2022
Most time series from real-world processes are stained with noise. Therefore, much attention should be paid to data noise removal techniques. In this study, we use the family of biorthogonal wavelet, high-pass, and low-pass filters, to investigate the ...
Mahboubeh Molavi-Arabshahi   +4 more
doaj   +1 more source

Medical Image Retrieval Using Transforms [PDF]

open access: yesApplied Medical Informatics, 2013
The purpose of this study is to access the stability of transformation methods for medical image analysis. The reason for image retrieval is due to the increase in acquisition of images.
Mannivannan VASUKI   +1 more
doaj  

Comparison of Image Compressions: Analog Transformations

open access: yesProceedings, 2020
A comparison between the four most used transforms, the discrete Fourier transform (DFT), discrete cosine transform (DCT), the Walsh–Hadamard transform (WHT) and the Haar-wavelet transform (DWT), for the transmission of analog images, varying their ...
Jose Balsa
doaj   +1 more source

Continuous and Discrete Wavelet Transforms Associated with Hermite Transform

open access: yesInternational Journal of Analysis and Applications, 2020
In this paper, we accomplished the concept of continuous and discrete Hermite wavelet transforms. We also discussed some basic properties of Hermite wavelet transform.
C. P. Pandey, Pranami Phukan
doaj  

Blind digital speech watermarking based on Eigen-value quantization in DWT

open access: yesJournal of King Saud University: Computer and Information Sciences, 2015
This paper presents a new blind digital speech watermarking technique based on Eigen-value quantization in Discrete Wavelet Transform. Initially, each frame of the digital speech was transformed into the wavelet domain by applying Discrete Wavelet ...
Mohammad Ali Nematollahi   +2 more
doaj   +1 more source

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