Results 241 to 250 of about 17,220,096 (291)

A NONUNIFORM HIGH-QUALITY IMAGE COMPRESSION METHOD TO PRESERVE USER-SPECIFIED COMPRESSION RATIO

International Journal of Image and Graphics, 2011
Most of image compression methods are based on frequency domain transforms that are followed by a quantization and rounding approach to discard some coefficients. It is obvious that the quality of compressed images highly depends on the manner of discarding these coefficients.
Bonyadi, Mohammad Reza, Moghaddam, Mohsen Ebrahimi   +1 more
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A technique for high ratio LZW compression [logic test vector compression]

2003 Design, Automation and Test in Europe Conference and Exhibition, 2003
Reduction of both the test suite size and the download time of test vectors is important in today's system-on-a-chip designs. In this paper, a method for compressing the scan test patterns using the LZW algorithm is presented. This method leverages the large number of "don't-cares" in test vectors in order to improve the compression ratio significantly.
M.J. Knieser, F.G. Wolff, C.A. Papachristou, D.J. Weyer, D.R. McIntyre   +4 more
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Scalable coding strategy for high resolution snapshot compressive temporal imaging at high compression ratios

2023
High-speed cameras are a great asset to grasp highly dynamic events beyond human perception. However, storage, bandwidth, and cost severely limit its widespread usage. Based on compressed sensing, snapshot compressive imaging appears as an alternative to traditional video capture and compression, though scalability in terms of spatial and temporal ...
Bastian Romero, Felipe Guzmán, Esteban Vera   +2 more
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Leveraging predefined huffman dictionaries for high compression rate and ratio

Proceedings of the 6th International Systems and Storage Conference on - SYSTOR '13, 2013
The explosion of data, both in motion and in rest, along with the popularity of cloud computing, have resulted in the need for better in-line compression solutions. Current Huffman coding modes are optimal for a single metric: compression ratio (quality) or rate (performance).
Amit Golander, Shai Tahar, Lior Glass, Giora Biran, Sagi Manole   +4 more
openaire   +1 more source

ECG compressed sensing method with high compression ratio and dynamic model reconstruction

Measurement, 2021
Abstract This paper introduces an alternative method for compressed sensing and reconstruction of ECG that is patient agnostic and offers a high compression ratio. The high compression ratio is achieved by high decimation of the measurement signal and its post requantization, further decreasing the number of bits needed for information transfer.
Ján Šaliga, Imrich Andráš, Pavol Dolinský, Linus Michaeli, Ondrej Kováč, Jozef Kromka   +5 more
openaire   +1 more source

Methanol Operation at High Compression Ratio in a Compression Ignition Engine

ASME 2025 ICE Forward Conference
Abstract Methanol fuel was operated in the Cooperative Fuels Research (CFR) Compression-Ignition Diesel Engine (F-5) with both conventional jet fuel as well as neat methanol at a very high compression ratio of 25 along with intake air heating.
Jim Cowart, Dianne Luning Prak
openaire   +1 more source

Computation of compressible flows with high density ratio and pressure ratio

Applied Mathematics and Mechanics, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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High Compression Rate and Ratio Using Predefined Huffman Dictionaries

2013 Data Compression Conference, 2013
Current Huffman coding modes are optimal for a single metric: compression ratio (quality) or rate (performance). We recognize that real life data can usually be classified to families of data types and thus the Huffman dictionary can be reused instead of recalculated.
Amit Golander, Shai Tahar, Lior Glass, Giora Biran, Sagi Manole   +4 more
openaire   +1 more source

Talbot array illuminators for high intensity compression ratios

Diffractive Optics and Micro-Optics, 1998
The Talbot array illuminator (TAIL) is well known as an efficient diffractive optical element that transforms, in the near field, a spatially coherent monochromatic wave into a large number of bright spots. Its performance is generally measured in terms of the highest achievable intensity compression ratio, i.e., the maximum achievable ratio of the ...
Werner Klaus, Kashiko Kodate
openaire   +1 more source

Injection compression molding of high-aspect-ratio nanostructures

Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena, 2011
High-aspect-ratio nanostructures were replicated by injection compression molding. The effects of the mold temperature and pattern shape on the degree of replication were investigated using a replication technique for optical disks (digital versatile disks) and a Ni stamper with patterns with a width and height of 200 and 400 nm.
Keisuke Nagato, Tetsuya Hamaguchi, Masayuki Nakao   +2 more
openaire   +1 more source