Results 1 to 10 of about 735,590 (286)

SWF Image Compression by Evaluating objects compression ratio

open access: yesJournal of Kufa for Mathematics and Computer, 2010
This work discusses the compression objects ratio for Macromedia Flash File (SWF) Image by Wavelet functions for compression and there effect for Macromedia Flash File (SWF) Images compression .
Hind Rostom Mohammed, Ameer Abd Al-Razaq
doaj   +2 more sources

Computed Tomography Image Compressibility and Limitations of Compression Ratio-Based Guidelines. [PDF]

open access: yesJ Digit Imaging, 2015
Finding optimal compression levels for diagnostic imaging is not an easy task. Significant compressibility variations exist between modalities, but little is known about compressibility variations within modalities. Moreover, compressibility is affected by acquisition parameters.
Pambrun JF, Noumeir R.
europepmc   +4 more sources

COMPRESSION OF NOISY GRAYSCALE IMAGES WITH COMPRESSION RATIO ANALYSIS

open access: yesСучасні інформаційні системи
The object of the study is the process of compressing noisy images in a lossy manner by better portable graphics (BPG) encoder. The subject of the study is the method for adaptive selection of the coder parameter Q depending on noise intensity and image
Sergii Kryvenko   +3 more
doaj   +3 more sources

The Effect of Compression Ratio and Alternative Fuels on the Performance of Turbocharged Diesel Engine by GT-POWER Software [PDF]

open access: yesJournal of Agricultural Machinery, 2021
Introduction Today, maximizing the efficiency of fuels and increasing the output power of diesel engines is considered inevitable due to the increasing need for energy resources, the reduction of fossil fuel resources, the need to maintain the ...
S Ahmadipour, M. H Aghkhani, J Zareei
doaj   +1 more source

Cyclic Variability Correlations to Operating Conditions for Spark-Ignition Engines

open access: yesCommunications, 2023
Variations of successive combustion cycles are associated with power losses, vibration and fluctuations in the engine speed, torque and work done. Previous studies declared that the elimination of cycle-to-cycle variation (CCV) could improve the engine ...
Mohamed I. Amin   +2 more
doaj   +1 more source

Computational Investigation on the Performance Increase of a Small Industrial Diesel Engine Regarding the Effects of Compression Ratio, Piston Bowl Shape and Injection Strategy

open access: yesEnergies, 2022
This paper describes the simulative approach to calibrate an already extremely highly turbocharged industrial diesel engine for higher low-speed torque.
Raphael Hatz   +3 more
doaj   +1 more source

Adaptive interpolation of multidimensional signals for differential compression [PDF]

open access: yesКомпьютерная оптика, 2018
Algorithms of interpolation of multidimensional signals for differential compression are investigated. We propose an approach for constructing adaptive interpolators based on the automatic selection of an interpolating function at each point of the ...
Aleksei Maksimov, Mikhael Gashnikov
doaj   +1 more source

Theoretical Analysis of Vuilleumier’s Hypothetical Engine and Cooler

open access: yesEnergies, 2021
Vuilleumier machines are a promising technology for heating. Respective performances of Vuilleumier’s engine and cooler are generally unclear. In Stirling machines, performances can be determined based on PV power flow and heat flow methods. In this work,
Qi Liu   +6 more
doaj   +1 more source

Parallel Recursive State Compression for Free [PDF]

open access: yes, 2011
This paper focuses on reducing memory usage in enumerative model checking, while maintaining the multi-core scalability obtained in earlier work. We present a tree-based multi-core compression method, which works by leveraging sharing among sub-vectors ...
A. Laarman   +14 more
core   +6 more sources

Efficient Approach of Compression Ratio Estimation for Data Delta Compression [PDF]

open access: yesJisuanji gongcheng
Delta compression not only eliminates identical data chunks but also removes duplicate fragmentations among similar chunks, achieving higher data compression ratios than deduplication.
ZOU Xiangyu, WEI Can, XIA Wen, LI Shiyi
doaj   +1 more source

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