Results 1 to 10 of about 2,099 (160)

Variable-to-Variable Huffman Coding: Optimal and Greedy Approaches [PDF]

open access: yesEntropy, 2022
In this paper, we address the problem of m-gram entropy variable-to-variable coding, extending the classical Huffman algorithm to the case of coding m-element (i.e., m-grams) sequences of symbols taken from the stream of input data for m>1.
Kun Tu, Dariusz Puchala
doaj   +2 more sources

Single-trial extraction of event-related potentials (ERPs) and classification of visual stimuli by ensemble use of discrete wavelet transform with Huffman coding and machine learning techniques [PDF]

open access: yesJournal of NeuroEngineering and Rehabilitation, 2023
Background Presentation of visual stimuli can induce changes in EEG signals that are typically detectable by averaging together data from multiple trials for individual participant analysis as well as for groups or conditions analysis of multiple ...
Hafeez Ullah Amin   +3 more
doaj   +2 more sources

Lossy Infrared Image Compression Based on Wavelet Coefficient Probability Modeling and Run-Length-Enhanced Huffman Coding [PDF]

open access: yesSensors
Infrared line-scanning images have high redundancy and large file sizes. In JPEG2000 compression, the MQ arithmetic encoder’s complexity slows down processing. Huffman coding can achieve O(1) complexity based on a code table, but its integer-bit encoding
Yaohua Zhu   +5 more
doaj   +2 more sources

An effective lossless compression method for attitude data with implementation on FPGA [PDF]

open access: yesScientific Reports
The attitude angles of the drilling tool serve as crucial information for transmitting Measurement While Drilling (MWD) data, enabling the optimization of drilling performance and ensuring tool safety.
Fangxing Lyu   +4 more
doaj   +2 more sources

An improved symbol reduction technique based Huffman coder for efficient entropy coding in the transform coders

open access: yesIET Image Processing, 2021
Entropy coding is the essential block of transform coders that losslessly converts the quantized transform coefficients into the bit‐stream suitable for transmission or storage.
Vikrant Singh Thakur   +2 more
doaj   +1 more source

A lossless compression method for logging data while drilling

open access: yesSystems Science & Control Engineering, 2021
Mud pulse transmission technology is widely used in logging while drilling (LWD), while its low data transmission efficiency has restricted the development of LWD technology for a long time. In order to improve the equivalent data transmission efficiency
Shan Song   +5 more
doaj   +1 more source

COLOR IMAGE COMPRESSION BASED ON ABSOLUTE MOMENT BLOCK TRUNCATION CODING USING DELTA ENCODING AND HUFFMAN CODING [PDF]

open access: yesمجلة بحوث التربية النوعية, 2014
A simple and easy to implement technique for improving absolute moment block truncation coding (AMBTC) is proposed. AMBTC method produce a fixed length binary representation of each block  according to the block size of the image.
N.A.A. Mosa
doaj   +1 more source

On the Randomness of Compressed Data

open access: yesInformation, 2020
It seems reasonable to expect from a good compression method that its output should not be further compressible, because it should behave essentially like random data.
Shmuel T. Klein, Dana Shapira
doaj   +1 more source

Implementation of Clock Gating for Power Optimizing in Synchronous Design

open access: yesTikrit Journal of Engineering Sciences, 2018
Huffman coding is very important technique in information theory. Compression technique is the technology for reducing the amount of data used to denote any content without decreasing the quality.
Hussein Shakor Mogheer   +1 more
doaj   +3 more sources

Lossless Text Image Compression using Two Dimensional Run Length Encoding

open access: yesJOIN: Jurnal Online Informatika, 2020
Text images are used in many types of conventional data communication where texts are not directly represented by digital character such as ASCII but represented by an image, for instance facsimile file or scanned documents.
Hilal H Nuha
doaj   +1 more source

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