Results 1 to 10 of about 4,167,463 (302)

Improved Light Field Compression Efficiency through BM3D-Based Denoising Using Inter-View Correlation [PDF]

open access: yesSensors, 2021
Multi-view or light field images have recently gained much attraction from academic and commercial fields to create breakthroughs that go beyond simple video-watching experiences. Immersive virtual reality is an important example.
You-Na Jin, Chae-Eun Rhee
doaj   +2 more sources

Experimental Investigation of Impacts of Initial Pressure Levels on Compression Efficiency and Dissolution in Liquid Piston Gas Compression

open access: yesEnergies, 2023
Understanding how the pressure level affects the efficiency of liquid piston gas compression is essential for a greater applicability of the technology in compressed air energy storage.
Barah Ahn, Paul I. Ro
doaj   +3 more sources

Chaos-Based Color Image Encryption with JPEG Compression: Balancing Security and Compression Efficiency [PDF]

open access: yesEntropy
In recent years, most proposed digital image encryption algorithms have primarily focused on encrypting raw pixel data, often neglecting the integration with image compression techniques. Image compression algorithms, such as JPEG, are widely utilized in
Wei Zhang   +5 more
doaj   +2 more sources

Comparison of discrete cosine and wavelet transforms in RAW image compression systems

open access: yesКомпьютерная оптика, 2022
The article describes features of digital processing of image signals in the process of coding based on discrete cosine (DCT) and wavelet transforms (DWT) that are used in the JPEG and JPEG2000 compression standards.
S.V. Sai, A.V. Zinkevich, E.S. Fomina
doaj   +1 more source

RL-SPIHT: Reinforcement Learning-Based Adaptive Selection of Compression Ratios for 1-D SPIHT Algorithm

open access: yesIEEE Access, 2021
In recent years, deep learning technologies have been actively used in various applications. In particular, networks trained using reinforcement learning (RL) are widely exploited for auxiliary tasks in various multimedia frameworks, including image ...
Jin Shin, Hyun Kim
doaj   +1 more source

Theoretical estimation of efficiency defect in Vapour Compression Refrigeration system using R1234yf, R134a and R1234ze [PDF]

open access: yesE3S Web of Conferences, 2021
In presented work, researchers have used efficiency defect as a tool for checking the utility of different refrigerants in Vapour compression refrigeration system. A mathematical model of simple Vapour compression refrigeration system is created.
Soni Shubham   +3 more
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

An Improved BLG Tree for Trajectory Compression with Constraints of Road Networks

open access: yesISPRS International Journal of Geo-Information, 2023
With the rising popularity of portable mobile positioning equipment, the volume of mobile trajectory data is increasing. Therefore, trajectory data compression has become an important basis for trajectory data processing, analysis, and mining.
Minshi Liu   +4 more
doaj   +1 more source

Exergy analysis of the biogas multistage compression process based on Aspen Plus simulation [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2022
In this study, by taking the compression separation process of a biogas project as a research subject, a multistage compression process was simulated using Aspen Plus software.
Zou Shuai   +6 more
doaj   +1 more source

Rate-Distortion-Preserving Forensic Watermarking Using Quantization Parameter Variation

open access: yesIEEE Access, 2020
Watermarking enables the identification of digital pirates that illegally redistribute copyright-protected videos. One of the main challenges is for the watermark to be imperceptible, while not increasing the video bit rate.
Hannes Mareen   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy