Results 1 to 10 of about 2,863,027 (299)

Modified Hilbert Curve for Rectangles and Cuboids and Its Application in Entropy Coding for Image and Video Compression [PDF]

open access: yesEntropy, 2021
In our previous work, by combining the Hilbert scan with the symbol grouping method, efficient run-length-based entropy coding was developed, and high-efficiency image compression algorithms based on the entropy coding were obtained.
Yibiao Rong, Xia Zhang, Jianyu Lin
doaj   +3 more sources

Faster Relative Entropy Coding with Greedy Rejection Coding [PDF]

open access: yesNeural Information Processing Systems, 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.
Flamich, Gergely   +2 more
openaire   +3 more sources

Information entropy of coding metasurface [PDF]

open access: yesLight: Science & Applications, 2016
Because of their exceptional capability to tailor the effective medium parameters, metamaterials have been widely used to control electromagnetic waves, which has led to the observation of many interesting phenomena, for example, negative refraction, invisibility cloaking, and anomalous reflections and transmissions.
Cui, Tie-Jun, Liu, Shuo, Li, Lian-Lin
openaire   +3 more sources

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   +2 more sources

HDVC: Deep Video Compression With Hyperprior-Based Entropy Coding

open access: yesIEEE Access
In this paper, we propose deep video compression with hyperprior-based entropy coding, named HDVC. The proposed method is based on the deep video compression (DVC) framework that replaces traditional block-based video compression with end-to-end video ...
Yusong Hu   +5 more
doaj   +2 more sources

Entropy Coding in HEVC [PDF]

open access: yesHigh Efficiency Video Coding, 2014
Context-Based Adaptive Binary Arithmetic Coding (CABAC) is a method of entropy coding first introduced in H.264/AVC and now used in the latest High Efficiency Video Coding (HEVC) standard. While it provides high coding efficiency, the data dependencies in H.264/AVC CABAC make it challenging to parallelize and thus limit its throughput.
Sze, Vivienne, Marpe, Detlev
openaire   +3 more sources

MMVC: Learned Multi-Mode Video Compression with Block-based Prediction Mode Selection and Density-Adaptive Entropy Coding [PDF]

open access: yesComputer Vision and Pattern Recognition, 2023
Learning-based video compression has been extensively studied over the past years, but it still has limitations in adapting to various motion patterns and entropy models.
Bowen Liu   +4 more
semanticscholar   +1 more source

Self-Supervised Learning via Maximum Entropy Coding [PDF]

open access: yesNeural Information Processing Systems, 2022
A mainstream type of current self-supervised learning methods pursues a general-purpose representation that can be well transferred to downstream tasks, typically by optimizing on a given pretext task such as instance discrimination.
Xin Liu   +3 more
semanticscholar   +1 more source

Fast and Efficient Entropy Coding Architectures for Massive Data Compression

open access: yesTechnologies, 2023
The compression of data is fundamental to alleviating the costs of transmitting and storing massive datasets employed in myriad fields of our society. Most compression systems employ an entropy coder in their coding pipeline to remove the redundancy of ...
Francesc Auli-Llinas
doaj   +1 more source

Secure Real-Time Chaotic Partial Encryption of Entropy-Coded Multimedia Information for Mobile Devices: Smartphones

open access: yesIEEE Access, 2022
Smartphones penetration-rate continues expanding, from 44% in 2017 up to 59% expected increase in 2022 as reported by Strategy Analytics.
Rogelio Hasimoto-Beltran   +2 more
doaj   +1 more source

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