Results 1 to 10 of about 235,831 (265)

A Novel No-Reference Quality Assessment Metric for Stereoscopic Images with Consideration of Comprehensive 3D Quality Information

open access: yesSensors, 2023
Recently, stereoscopic image quality assessment has attracted a lot attention. However, compared with 2D image quality assessment, it is much more difficult to assess the quality of stereoscopic images due to the lack of understanding of 3D visual ...
Liquan Shen   +4 more
doaj   +1 more source

Intelligent Healthcare System Using Patients Confidential Data Communication in Electrocardiogram Signals

open access: yesFrontiers in Aging Neuroscience, 2022
With the advent of the aging era, healthcare and elderly care have become the focus of medical care, especially the care of the elderly with dementia.
Ming Zhao   +7 more
doaj   +1 more source

Patient Confidential Data Hiding and Transmission System Using Amplitude Quantization in the Frequency Domain of ECG Signals

open access: yesSensors, 2023
The transform domain provides a useful tool in the field of confidential data hiding and protection. In order to protect and transmit patients’ information and competence, this study develops an amplitude quantization system in a transform domain by ...
Shuo-Tsung Chen   +6 more
doaj   +1 more source

Statistical Analysis of Local Gradient in Mel Transform Domain for Parkinson’s Dysphonia [PDF]

open access: yesJisuanji kexue yu tansuo, 2022
Dysphonia analysis of Parkinson’s disease is the basis of information analysis for early diagnosis of Parkinson’s disease based on speech.
ZHANG Tao, LIN Liqin, ZHANG Yajuan, NIU Xiaoxia
doaj   +1 more source

Overview of Image Denoising Methods

open access: yesJisuanji kexue yu tansuo, 2021
In real scenes, due to the imperfections of equipment and systems or the existence of low-light environments, the collected images are noisy. The images will also be affected by additional noise during the compression and transmission process, which will
LIU Liping, QIAO Lele, JIANG Liucheng
doaj   +1 more source

Conditional Random Field-Guided Multi-Focus Image Fusion

open access: yesJournal of Imaging, 2022
Multi-Focus image fusion is of great importance in order to cope with the limited Depth-of-Field of optical lenses. Since input images contain noise, multi-focus image fusion methods that support denoising are important.
Odysseas Bouzos   +2 more
doaj   +1 more source

Multi-Focus Image Fusion: Algorithms, Evaluation, and a Library

open access: yesJournal of Imaging, 2020
Image fusion is a process that integrates similar types of images collected from heterogeneous sources into one image in which the information is more definite and certain.
Rabia Zafar   +2 more
doaj   +1 more source

Speech Encryption Based on Wavelet Transformation and Chaotic Map [PDF]

open access: yesEngineering and Technology Journal, 2016
In this paper a new algorithm is presented for speech encryption. It includes dividing the speech signal into overlapped blocks then shuffling those blocks in the time domain. A second permutation is done for the coefficients of the block which generated
Hala B.Abdul Wahab, Sundus I. Mahdi
doaj   +1 more source

Curvelet Transform Domain-Based Sparse Nonnegative Matrix Factorization for Hyperspectral Unmixing

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Hyperspectral unmixing (HU) is an efficient way to extract component information from mixed pixels in remotely sensed imagery. Nonnegative matrix factorization (NMF) based unmixing methods have been widely used due to their ability to extract endmembers (
Xiang Xu   +3 more
doaj   +1 more source

Integrated representation for discrete Fourier and wavelet transforms using vector notation

open access: yesMehran University Research Journal of Engineering and Technology, 2022
Many mathematical operations are implemented easily through transform domain operations. Multiple transform domain operations are used independently in large and complex applications.
Tariq Javid   +3 more
doaj   +1 more source

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