Results 1 to 10 of about 20,539 (211)
DISCRETE WAVELET TRANSFORMS [PDF]
Journal of Computational and Graphical Statistics, 2002 Abstract The theory of wavelets has recently undergone a period of rapid development. We introduce a software package called wavethresh that works within the statistical language S to perform one- and two-dimensional discrete wavelet transforms. The transforms and their inverses can be computed using any particular wavelet selected from a range of ...
Ramazan Gençay +2 more
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The Improvement of the Discrete Wavelet Transform
Mathematics, 2023 Discrete wavelet transforms are widely used in signal processing, data compression and spectral analysis. For discrete data with finite sizes, one always pads the data with zeros or extends the data into periodic data before performing the discrete ...
Zhihua Zhang
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On the energy leakage of discrete wavelet transform [PDF]
Mechanical Systems and Signal Processing, 2008 The energy leakage is an inherent deficiency of discrete wavelet transform (DWT) which is often ignored by researchers and practitioners. In this paper, a systematic investigation into the energy leakage is reported. The DWT is briefly introduced first, and then the energy leakage phenomenon is described using a numerical example as an illustration and
Zhike Peng +4 more
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Coding Implementation By Using Discrete Wavelet Transform [PDF]
Engineering and Technology Journal, 2010 Image processing can be considered as an essential part of wide rangecomputer applications. This application deals with image coding and it discussesimage coding schemes, by using transforms to code the image or not.
Matheel Emad AL-Deen AL-Dargazli +1 more
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Lightweight Denoising Autoencoder Design for Noise Removal in Electrocardiography
IEEE Access, 2022 This study proposes two denoising autoencoder models with discrete cosine transform and discrete wavelet transform, to remove electrode motion artifacts in noisy electrocardiography. Initially, the discrete cosine transform and discrete wavelet transform
Ming-Hwa Sheu +5 more
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On the Discrete Harmonic Wavelet Transform [PDF]
Mathematical Problems in Engineering, 2008 The discrete harmonic wavelet transform has been reviewed and applied towards given functions. The absolute error of reconstruction of the functions has been computed.
CATTANI, Carlo, KUDREYKO A.
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Image Compression Using 3-D Two-Level Technique
Journal of Engineering, 2023 In this paper three techniques for image compression are implemented. The proposed techniques consist of three dimension (3-D) two level discrete wavelet transform (DWT), 3-D two level discrete multi-wavelet transform (DMWT) and 3-D two level hybrid ...
Zainab Ibraheem Abood
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JUTI: Jurnal Ilmiah Teknologi Informasi, 2020 Personal identification can be done by using face, fingerprint, palm prints, eye’s retina, or voice recognition which commonly called as biometric methods. Face recognition is the most popular and widely used among those biometric methods. However, there
Afrizal Laksita Akbar +2 more
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Optimal decomposition level of discrete, stationary and dual tree complex wavelet transform for pixel based fusion of multi-focused images [PDF]
Serbian 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
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Techno.Com, 2022 Denoising adalah cara dalam menghilangkan noise yang ada pada sinyal elektrodiagram, sehingga gelombang yang ada pada elektrodiagram dapat dianalisis dengan menggunakan mesin untuk mendapatkan prediksi penyakit jantung yang diderita.
Febriyanti Panjaitan, Rizki Amalia
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