Results 31 to 40 of about 99,410 (264)

Improving Lossless Image Compression with Contextual Memory

open access: yesApplied Sciences, 2019
With the increased use of image acquisition devices, including cameras and medical imaging instruments, the amount of information ready for long term storage is also growing.
Alexandru Dorobanțiu, Remus Brad
doaj   +1 more source

Lossless data compression of grid-based digital elevation models: A png image format evaluation [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014
At present, computers, lasers, radars, planes and satellite technologies make possible very fast and accurate topographic data acquisition for the production of maps. However, the problem of managing and manipulating this data efficiently remains.
G. Scarmana
doaj   +1 more source

Lossless White Balance for Improved Lossless CFA Image and Video Compression

open access: yesIEEE Transactions on Image Processing, 2022
Color filter array is spatial multiplexing of pixel-sized filters placed over pixel detectors in camera sensors. The state-of-the-art lossless coding techniques of raw sensor data captured by such sensors leverage spatial or cross-color correlation using lifting schemes. In this paper, we propose a lifting-based lossless white balance algorithm.
Yeejin Lee, Keigo Hirakawa
openaire   +3 more sources

Hardware architecture for lossless image compression based on context-based modeling and arithmetic coding [PDF]

open access: yes, 2007
In this paper we present a novel hardware architecture for context-based statistical lossless image compression, as part of a dynamically reconfigurable architecture for universal lossless compression.
Canagarajah, CN   +3 more
core   +2 more sources

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

ApproximateSecret Sharing in Field of Real Numbers

open access: yesEntropy
In the era of big data, the security of information encryption systems has garnered extensive attention, particularly in critical domains such as financial transactions and medical data management.
Jiaqi Wan   +3 more
doaj   +1 more source

A high speed and memory efficient algorithm for perceptually-lossless volumetric medical image compression

open access: yesJournal of King Saud University: Computer and Information Sciences, 2022
With the advancements in modern medical imaging systems, the diagnostic image data has increased exponentially. The future medical applications seek medical imaging devices to be portable. Image quality and real-time processing are of prime importance in
Mohd Rafi Lone
doaj   +1 more source

Hyperspectral IASI L1C Data Compression

open access: yesSensors, 2017
The Infrared Atmospheric Sounding Interferometer (IASI), implemented on the MetOp satellite series, represents a significant step forward in atmospheric forecast and weather understanding.
Joaquín García-Sobrino   +2 more
doaj   +1 more source

Autonomous linear lossless systems

open access: yes, 2008
We define a lossless autonomous system as one having a quadratic differential form associated with it called an energy function, which is positive and which is conserved.
Rao, Shodhan, Rapisarda, Paolo
core   +1 more source

Moth‐Wing‐Inspired Multifunctional Metamaterials

open access: yesAdvanced Materials, EarlyView.
This study develops a moth‐wing‐inspired heterogeneous metamaterial that achieves synergistic broadband sound absorption, mechanical energy dissipation, and thermal insulation within a lightweight architected framework. Combining bioinspired gradient design, genetic‐algorithm optimization, and additive manufacturing, the bionic heterogeneous acoustic ...
Haoran Pei   +12 more
wiley   +1 more source

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