Results 21 to 30 of about 2,483,627 (230)

A New Perspective on Improving the Lossless Compression Efficiency for Initially Acquired Images

open access: yesIEEE Access, 2019
A new lossless compression scheme of compressing the initially-acquired continuous-intensity images with a lossy compression algorithm to obtain higher compression efficiency is proposed. Even if a lossy algorithm is employed, for decoded original images,
Jianyu Lin
doaj   +1 more source

Reversible Integer-to-Integer Wavelet Filter Design for Lossless Image Compression

open access: yesIEEE Access, 2020
In this paper, factors that influence the lossless compression efficiency of reversible integer-tointeger (ITI) wavelet filters are presented. It is observed that there is a converged region for the bitrate of the compressed subbands.
Jianyu Lin
doaj   +1 more source

A Novel Rate Control Algorithm for Onboard Predictive Coding of Multispectral and Hyperspectral Images [PDF]

open access: yes, 2014
Predictive coding is attractive for compression onboard of spacecrafts thanks to its low computational complexity, modest memory requirements and the ability to accurately control quality on a pixel-by-pixel basis.
Magli, Enrico, Valsesia, Diego
core   +2 more sources

Deep-learning-based macro-pixel synthesis and lossless coding of light field images

open access: yesAPSIPA Transactions on Signal and Information Processing, 2019
This paper proposes a novel approach for lossless coding of light field (LF) images based on a macro-pixel (MP) synthesis technique which synthesizes the entire LF image in one step. The reference views used in the synthesis process are selected based on
I. Schiopu, A. Munteanu
semanticscholar   +1 more source

HOW DOES SHANNON’S SOURCE CODING THEOREM FARE IN PREDICTION OF IMAGE COMPRESSION RATIO WITH CURRENT ALGORITHMS? [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Images with large volumes are generated daily with the advent of advanced sensors and platforms (e.g., satellite, unmanned autonomous vehicle) of data acquisition. This incurs issues on the storage, processing, and transmission of images. To address such
X. Cheng, Z. Li, Z. Li
doaj   +1 more source

A Continuity Theory for Lossless Source Coding over Networks [PDF]

open access: yes, 2009
A continuity theory of lossless source coding over networks is established and its implications are investigated. In the given model, source and side-information random variables X and Y have finite alphabets, and the input sequences are drawn i.i.d ...
Bakshi, Mayank   +2 more
core   +1 more source

Lossless secure source coding: Yamamoto's setting [PDF]

open access: yes2015 53rd Annual Allerton Conference on Communication, Control, and Computing (Allerton), 2015
Given a private source of information, $X^n$ and a public correlated source, $Y^n$, we study the problem of encoding the two-dimensional source $(X^n, Y^n)$ into an index $J$ such that a remote party, knowing $J$ and some external side information $Z^n$, can losslessly recover $Y^n$ while any eavesdropper knowing $J$ and possibly a correlated side ...
Asoodeh, Shahab   +2 more
openaire   +2 more sources

IMPROVING EFFICIENCY IN IMAGE ENCRYPTION AND COMPRESSION USING PERMUTATIONS & PREDICTIONS

open access: yesICTACT Journal on Image and Video Processing, 2017
Due to rapid growth in image sizes, an alternate of numerically lossless coding named visually lossless coding is considered to reduce storage size and lower data transmission.
S Shunmugan, P Arockia Jansi Rani
doaj   +1 more source

Lossless Image Coding Using Non-MMSE Algorithms to Calculate Linear Prediction Coefficients

open access: yesEntropy, 2023
This paper presents a lossless image compression method with a fast decoding time and flexible adjustment of coder parameters affecting its implementation complexity.
Grzegorz Ulacha, Mirosław Łazoryszczak
doaj   +1 more source

Lossless and near-lossless source coding for multiple access networks [PDF]

open access: yes, 2003
A multiple access source code (MASC) is a source code designed for the following network configuration: a pair of correlated information sequences {X-i}(i=1)(infinity), and {Y-i}(i=1)(infinity) is drawn independent and identically distributed (i.i.d ...
Effros, Michelle, Zhao, Qian
core   +1 more source

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