Results 121 to 130 of about 10,310 (245)

Tunable Plasmon‐Enhanced Wide‐Angle Terahertz Perfect Absorption via Lorentz Media

open access: yesNanophotonics, Volume 15, Issue 11, 13 June 2026.
A planar graphene‐Lorentz‐DBR structure realizes wide‐angle terahertz perfect absorption through a composite phase‐amplitude matching mechanism. The Lorentz dielectric provides dispersive phase compensation and controlled loss, whereas graphene supports dissipative coupling, enabling high absorption up to 80° incidence and multichannel spectral ...
Yuxuan Zhou
wiley   +1 more source

A Comprehensive Review on Hyperspectral Image Lossless Compression Algorithms

open access: yesRemote Sensing
The rapid advancement of imaging sensors and optical filters has significantly increased the number of spectral bands captured in hyperspectral images, leading to a substantial rise in data volume.
Shumin Liu   +3 more
doaj   +1 more source

A lossless compression method incorporating sensor fault detection for underwater acoustic sensor array

open access: yesInternational Journal of Distributed Sensor Networks, 2017
This article proposes an efficient lossless compression method for an underwater acoustic sensor array. The proposed method first decides whether the input signal is coming from a normal or a faulty sensor.
Yong Guk Kim   +4 more
doaj   +1 more source

Fast Lossless Image Compression [PDF]

open access: yes, 2007
In this paper, we present a simple algorithm for fast lossless compression of grayscale images. It consists of Differential Pulse Code Modulation (DPCM) followed by Huffman coding of the most-likely residual magnitudes.
Jeffrey C. Wehnes   +2 more
core  

Near-lossless Compression of Tc-99 m DMSA Scan Images Using Discrete Cosine Transformation. [PDF]

open access: yesIndian J Nucl Med, 2023
Yadav P   +7 more
europepmc   +1 more source

Lossless data compression scheme based on neural network and SVM [PDF]

open access: yes, 2006
First, the compression-awaited data are regarded Lis character strings which are produced by virtual information source mapping M. then the model of the virtual information source M is established by neural network and SVM.
Hujin (Hujin)   +6 more
core  

HYBRID COMPRESSION OF CERVICAL IMAGES BY SEGMENTING NUCLEI-CYTOPLASM [PDF]

open access: yesICTACT Journal on Image and Video Processing, 2012
A hybrid image compression method is proposed by which the Nuclei-Cytoplasm of the image is completely restorable and the background part of the image is restorable with insignificant loss.
Y. Jacob Vetha Raj   +2 more
doaj  

Lossless Compression of Images [PDF]

open access: yes, 2014
Data compression is a challenging process with important practical applications. Specialized techniques for lossy and lossless data compression have been the subject of numerous investigations during last several decades.
Koc, Basar
core  

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