Results 11 to 20 of about 52,311 (259)

Optimal Relay Selection using jellyfish Optimization Algorithm for Image Transmission over Multiuser Cooperative Communication Networks [PDF]

open access: yesJES: Journal of Engineering Sciences, 2023
A recent study and research have shown that the relay selection schemes for cooperative communication can achieve full cooperative diversity gains and still maintains energy efficiency.
fatma mohamed   +2 more
doaj   +1 more source

A novel method of data compression using ROI for biomedical 2D images

open access: yesMeasurement: Sensors, 2022
In the era of modern medical imaging communal, huge volume of medical image data are being acquired and need to be transmitted and archived which necessitate the development of efficient image compression techniques on both 2D and 3D images.
Dankan Gowda V   +6 more
doaj   +1 more source

Fully spatial and SNR scalable, SPIHT-based image coding for transmission over heterogenous networks

open access: yesJournal of Telecommunications and Information Technology, 2003
This paper presents a fully scalable image coding scheme based on the set partitioning in hierarchical trees (SPIHT) algorithm. The proposed algorithm, called fully scalable SPIHT (FS-SPIHT), adds the spatial scalability feature to the SPIHT algorithm ...
Habibollah Danyali
doaj   +1 more source

An Efficient Index for Visual Search in Appearance-based SLAM [PDF]

open access: yes, 2013
Vector-quantization can be a computationally expensive step in visual bag-of-words (BoW) search when the vocabulary is large. A BoW-based appearance SLAM needs to tackle this problem for an efficient real-time operation. We propose an effective method to
Hajebi, Kiana, Zhang, Hong
core   +1 more source

Error Concealment using Data Hiding in Wireless Image Transmission

open access: yesTelfor Journal, 2016
The transmission of image/video over unreliable medium like wireless networks generally results in receiving a damaged image/video. In this paper, a novel image error concealment scheme based on the idea of data hiding and Set Partitioning In ...
A. Akbari   +3 more
doaj   +1 more source

Métodos de compresión sin pérdidas de imágenes de resonancia magnética utilizando transformada wavelet: revisión sistemática

open access: yesEcomatemático, 2021
En medicina la información de las imágenes diagnósticas es vital e imprescindible, por este motivo es necesario procesarlas sin que existan márgenes de error que interfieran con su lectura y análisis.
Paula Andrea Ferreira-Mejía   +2 more
doaj   +1 more source

Multivariate Approaches to Classification in Extragalactic Astronomy [PDF]

open access: yes, 2015
Clustering objects into synthetic groups is a natural activity of any science. Astrophysics is not an exception and is now facing a deluge of data. For galaxies, the one-century old Hubble classification and the Hubble tuning fork are still largely in ...
Chattopadhyay, Asis Kumar   +2 more
core   +3 more sources

Pathologies affect the performance of ECG signals compression

open access: yesScientific Reports, 2021
The performance of ECG signals compression is influenced by many things. However, there is not a single study primarily focused on the possible effects of ECG pathologies on the performance of compression algorithms.
Andrea Nemcova   +3 more
doaj   +1 more source

Direct measurement of tree height provides different results on the assessment of LiDAR accuracy [PDF]

open access: yes, 2017
open8noopenSibona, Emanuele; Vitali, Alessandro; Meloni, Fabio; Caffo, Lucia; Dotta, Alberto; Lingua, Emanuele; Motta, Renzo; Garbarino, MatteoSibona, Emanuele; Vitali, Alessandro; Meloni, Fabio; Caffo, Lucia; Dotta, Alberto; Lingua, Emanuele; Motta ...

core   +1 more source

The Effects of Compression on the Detection of Atrial Fibrillation in ECG Signals

open access: yesApplied Sciences, 2021
Although Atrial Fibrillation (AF) is the most frequent cause of cardioembolic stroke, the arrhythmia remains underdiagnosed, as it is often asymptomatic or intermittent.
Raquel Cervigón   +4 more
doaj   +1 more source

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