Results 21 to 30 of about 131,990 (294)

R\'enyi Bounds on Information Combining

open access: yes, 2020
Bounds on information combining are entropic inequalities that determine how the information, or entropy, of a set of random variables can change when they are combined in certain prescribed ways. Such bounds play an important role in information theory,
Hirche, Christoph
core   +1 more source

Entropy-Based Fast Largest Coding Unit Partition Algorithm in High-Efficiency Video Coding

open access: yesEntropy, 2013
High-efficiency video coding (HEVC) is a new video coding standard being developed by the Joint Collaborative Team on Video Coding. HEVC adopted numerous new tools, such as more flexible data structure representations, which include the coding unit (CU),
Mengmeng Zhang, Jianfeng Qu, Huihui Bai
doaj   +1 more source

Image Statistics Preserving Encrypt-then-Compress Scheme Dedicated for JPEG Compression Standard

open access: yesEntropy, 2021
In this paper, the authors analyze in more details an image encryption scheme, proposed by the authors in their earlier work, which preserves input image statistics and can be used in connection with the JPEG compression standard.
Dariusz Puchala   +2 more
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

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

Complexity Analysis Of Next-Generation VVC Encoding and Decoding

open access: yes, 2020
While the next generation video compression standard, Versatile Video Coding (VVC), provides a superior compression efficiency, its computational complexity dramatically increases.
Adelimanesh, Mohammad Ali   +3 more
core   +1 more source

Chains, entropy, coding [PDF]

open access: yesErgodic Theory and Dynamical Systems, 1986
AbstractVarious definitions of the entropy for countable-state topological Markov chains are considered. Concrete examples show that these quantities do not coincide in general and can behave badly under nice maps. Certain restricted random walks which arise in a problem in magnetic recording provide interesting examples of chains.
openaire   +2 more sources

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

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

Smooth Renyi Entropies and the Quantum Information Spectrum

open access: yes, 2008
Many of the traditional results in information theory, such as the channel coding theorem or the source coding theorem, are restricted to scenarios where the underlying resources are independent and identically distributed (i.i.d.) over a large number of
Datta, Nilanjana, Renner, Renato
core   +1 more source

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