Results 21 to 30 of about 4,803 (262)

Combined Compressed Sensing and SENSE to Enhance Radiation Therapy Magnetic Resonance Imaging Simulation

open access: yesAdvances in Radiation Oncology, 2022
Purpose: To assess the effect of a combination of compressed sensing and SENSitivity Encoding (SENSE) acceleration techniques on radiation therapy magnetic resonance imaging (MRI) simulation workflows.
Victoria Y. Yu, PhD   +7 more
doaj   +1 more source

TamaRISC-CS: An ultra-low-power application-specific processor for compressed sensing [PDF]

open access: yes2012 IEEE/IFIP 20th International Conference on VLSI and System-on-Chip (VLSI-SoC), 2012
Compressed sensing (CS) is a universal technique for the compression of sparse signals. CS has been widely used in sensing platforms where portable, autonomous devices have to operate for long periods of time with limited energy resources. Therefore, an ultra-low-power (ULP) CS implementation is vital for these kind of energy-limited systems.
Jeremy Constantin   +6 more
openaire   +2 more sources

Compressed Measurements Based Spectrum Sensing for Wideband Cognitive Radio Systems

open access: yesInternational Journal of Antennas and Propagation, 2015
Spectrum sensing is the most important component in the cognitive radio (CR) technology. Spectrum sensing has considerable technical challenges, especially in wideband systems where higher sampling rates are required which increases the complexity and ...
Taha A. Khalaf   +2 more
doaj   +1 more source

Compressive Domain Deep CNN for Image Classification and Performance Improvement Using Genetic Algorithm-Based Sensing Mask Learning

open access: yesApplied Sciences, 2022
The majority of digital images are stored in compressed form. Generally, image classification using convolution neural network (CNN) is done in uncompressed form rather than compressed one.
Baba Fakruddin Ali B H   +1 more
doaj   +1 more source

Conventional and Deep-Learning-Based Image Reconstructions of Undersampled K-Space Data of the Lumbar Spine Using Compressed Sensing in MRI: A Comparative Study on 20 Subjects

open access: yesDiagnostics, 2023
Compressed sensing accelerates magnetic resonance imaging (MRI) acquisition by undersampling of the k-space. Yet, excessive undersampling impairs image quality when using conventional reconstruction techniques.
Philipp Fervers   +8 more
doaj   +1 more source

Deterministic Construction of Compressed Sensing Matrices via Vector Spaces Over Finite Fields

open access: yesIEEE Access, 2020
Compressed Sensing (CS) is a new signal processing theory under the condition that the signal is sparse or compressible. One of the central problems in compressed sensing is the construction of sensing matrices.
Xuemei Liu, Lihua Jia
doaj   +1 more source

Denoising-Based Turbo Compressed Sensing

open access: yesIEEE Access, 2017
Turbo compressed sensing (Turbo-CS) is an efficient iterative algorithm for sparse signal recovery with partial orthogonal sensing matrices. In this paper, we extend the Turbo-CS algorithm to solve compressed sensing problems involving a more general ...
Zhipeng Xue, Junjie Ma, Xiaojun Yuan
doaj   +1 more source

Compressed Sensing-Based MRI Reconstruction Using Complex Double-Density Dual-Tree DWT

open access: yesInternational Journal of Biomedical Imaging, 2013
Undersampling k-space data is an efficient way to speed up the magnetic resonance imaging (MRI) process. As a newly developed mathematical framework of signal sampling and recovery, compressed sensing (CS) allows signal acquisition using fewer samples ...
Zangen Zhu   +3 more
doaj   +1 more source

Design of Robust Sensing Matrix for UAV Images Encryption and Compression

open access: yesApplied Sciences, 2023
The sparse representation error (SRE) exists when the images are represented sparsely. The SRE is particularly large in unmanned aerial vehicles (UAV) images due to the disturbance of the harsh environment or the instability of its flight, which will ...
Qianru Jiang, Huang Bai, Xiongxiong He
doaj   +1 more source

Deterministic Compressed Sensing Matrices From Sequences With Optimal Correlation

open access: yesIEEE Access, 2019
Compressed sensing (CS) is a new method of data acquisition which aims at recovering higher dimensional sparse vectors from considerably smaller linear measurements. One of the key problems in CS is the construction of sensing matrices. In this paper, we
Zhi Gu   +4 more
doaj   +1 more source

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