Results 21 to 30 of about 26,272 (260)

Universal Adaptive Stream-Based Entropy Coding

open access: yesIEEE Access
Data stream is a major data type in modern information equipment such as sensory and video/sound devices, which is fast and continuously generated without any stall cycle. Due to artificial intelligence becoming a common tool to extend application domain
Shinichi Yamagiwa, Taiki Kato
doaj   +1 more source

Lossless Compression of Sensor Signals Using an Untrained Multi-Channel Recurrent Neural Predictor

open access: yesApplied Sciences, 2021
The use of sensor applications has been steadily increasing, leading to an urgent need for efficient data compression techniques to facilitate the storage, transmission, and processing of digital signals generated by sensors. Unlike other sequential data
Qianhao Chen, Wenqi Wu, Wei Luo
doaj   +1 more source

Entropy of a Quantum Error Correction Code [PDF]

open access: yesOpen Systems & Information Dynamics, 2008
We define and investigate the notion of entropy for quantum error correcting codes. The entropy of a code for a given quantum channel has a number of equivalent realisations, such as through the coefficients associated with the Knill-Laflamme conditions and the entropy exchange computed with respect to any initial state supported on the code.
David W. Kribs   +2 more
openaire   +2 more sources

The Compression Optimality of Asymmetric Numeral Systems

open access: yesEntropy, 2023
Source coding has a rich and long history. However, a recent explosion of multimedia Internet applications (such as teleconferencing and video streaming, for instance) renews interest in fast compression that also squeezes out as much redundancy as ...
Josef Pieprzyk   +5 more
doaj   +1 more source

Analysis of the Limitations of Further Improvement of the Efficiency of VVC-CABAC

open access: yesIEEE Access, 2023
Hybrid video compression plays an invaluable role in digital video transmission and storage services and systems. It performs several-hundred-fold reduction in the amount of video data, which makes these systems much more efficient.
Damian Karwowski   +3 more
doaj   +1 more source

Lightweight Cipher for H.264 Videos in the Internet of Multimedia Things with Encryption Space Ratio Diagnostics

open access: yesSensors, 2019
Within an Internet of Multimedia Things, the risk of disclosing streamed video content, such as that arising from video surveillance, is of heightened concern. This leads to the encryption of that content.
Amna Shifa   +4 more
doaj   +1 more source

Faster Relative Entropy Coding with Greedy Rejection Coding

open access: yesAdvances in Neural Information Processing Systems 36, 2023
Relative entropy coding (REC) algorithms encode a sample from a target distribution $Q$ using a proposal distribution $P$ using as few bits as possible. Unlike entropy coding, REC does not assume discrete distributions or require quantisation.
Gergely Flamich   +2 more
openaire   +3 more sources

Precise Estimation of Probabilities in CABAC Using the Cauchy Optimization Method

open access: yesIEEE Access, 2020
The algorithm of entropy coding that is now widely used in video compression is the Context-based Adaptive Binary Arithmetic Coding (CABAC). This paper presents a modified, improved version of CABAC, called the CABAC+.
Damian Karwowski
doaj   +1 more source

Entropy of Neuronal Spike Patterns

open access: yesEntropy
Neuronal spike patterns are the fundamental units of neural communication in the brain, which is still not fully understood. Entropy measures offer a quantitative framework to assess the variability and information content of these spike patterns.
Artur Luczak
doaj   +1 more source

Entropy Coding Aided Adaptive Subcarrier-Index Modulated OFDM

open access: yesIEEE Access, 2018
We propose entropy coding-aided adaptive subcarrier-index-modulated orthogonal frequency division multiplexing (SIM-OFDM). In conventional SIM-OFDM, the indices of the subcarriers activated are capable of conveying extra information. We propose the novel
Mohammad Ismat Kadir   +3 more
doaj   +1 more source

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