Results 31 to 40 of about 664,250 (197)

MEDICAL IMAGES COMPRESSION BASED ON SPIHT AND BAT INSPIRED ALGORITHMS

Iraqi Journal for Computers and Informatics, 2019
There is a significant necessity to compress the medical images for the purposes of communication and storage. Most currently available compression techniques produce an extremely high compression ratio with a high-quality loss.
Sarah Jasim
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Digital Image Compression using Karhunen-Loève Transform [PDF]

Al-Rafidain Journal of Computer Sciences and Mathematics, 2013
In this research present the digital image compression using by  Karhunen-Loève Transform (KLT), by convert a color digital  image to a gray square digital image, then select the no. of eigen values and eigen vectors that can reconstruct the image,  that
Ghada Younes
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Hugoniot of shocked liquid deuterium up to 300 GPa: Quantum molecular dynamic simulations

, 2010
Quantum molecular dynamic (QMD) simulations are introduced to study the thermophysical properties of liquid deuterium under shock compression. The principal Hugoniot is determined from the equation of states, where contributions from molecular ...
He, Xian-Tu, Wang, Cong, Zhang, Ping
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Combustion Analysis of Ammonia Fueled High Compression Ratio SI Engine with Glow Plug and Sub-Chamber

International Journal of Automotive Engineering, 2022
Ammonia is a kind of energy carrier of hydrogen, and its use as engine fuel has been studied. However, it requires overcoming shortcomings of low combustion speed. We focus that the laminar combustion velocity of gasoline mixture with an excess air ratio
Bin Guo, Mitsuhisa Ichiyanagi, Kento Kajiki, Narumi Aratake, Qinyue Zheng, Masashi Kodaka, Takashi Suzuki   +6 more
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Effective compression and classification of ECG arrhythmia by singular value decomposition

Biomedical Engineering Advances, 2021
Electrocardiogram (ECG) monitoring systems are widely applied to tele-cardiology healthcare programs nowadays, where ECG signals should always be compressed first during its transmission and storage.
Lijuan Zheng, Zihan Wang, Junqiang Liang, Shifan Luo, Senping Tian   +4 more
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A comparative study on improvement of image compression method using hybrid of DCT and DWT techniques with huffman encoding [PDF]

, 2021
Image is an important media used to visualize or represent a message in daily conversation between users device. Nowadays, there are many application that involve image processing such as security system, communication system and medical system where
Anwar Hussin, Mumtaz
core  

High-Ratio Nonlinear Compression of Picosecond Lasers Based on Thin Plates

Photonics
Nonlinear compression, as a newly developed post-processing technique, holds the potential to overcome the limitations of gain media and significantly reduce the pulse width of emitted laser pulses.
Kainan Zhou, Zhaoli Li, Yanlei Zuo, Zhaohui Wu, Xiaoming Zeng, Xiao Wang, Xiaodong Wang, Jie Mu, Guoying Feng   +8 more
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Three-Dimensional Adaptive Image Compression Concept for Medical Imaging: Application to Computed Tomography Angiography for Peripheral Arteries

Journal of Cardiovascular Development and Disease, 2022
Advances in computed tomography (CT) have resulted in a substantial increase in the size of datasets. We built a new concept of medical image compression that provides the best compromise between compression rate and image quality. The method is based on
Guillaume Fahrni, David C. Rotzinger, Chiaki Nakajo, Jamshid Dehmeshki, Salah Dine Qanadli   +4 more
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Data compression for the First G-APD Cherenkov Telescope

, 2015
The First Geiger-mode Avalanche photodiode (G-APD) Cherenkov Telescope (FACT) has been operating on the Canary island of La Palma since October 2011. Operations were automated so that the system can be operated remotely.
Ahnen, M. L., Balbo, M., Bergmann, M., Biland, A., Bretz, T., Buß, J., Dorner, D., Einecke, S., Freiwald, J., Hempfling, C., Hildebrand, D., Hughes, G., Lustermann, W., Lyard, E., Mannheim, K., Meier, K., Mueller, S., Neise, D., Neronov, A., Overkemping, A. -K., Paravac, A., Pauss, F., Rhode, W., Steinbring, T., Temme, F., Thaele, J., Toscano, S., Vogler, P., Walter, R., Wilbert, A.   +29 more
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A Hybrid Texture Coding Method for Fast Texture Mapping [PDF]

, 2016
An efficient texture compression method is proposed based on a block matching process between the current block and the previously encoded blocks. Texture mapping is widely used to improve the quality of rendering results in real-time applications.
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