RESEARCH PAPERS

huffmann coding research papers




Condensed table ofHuffman coding, a new approach to efficient decoding
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Huffmancodes. The key idea is to define a CondensedHuffmanTable (CHT) that is smaller than the ordinaryHuffmanTable and which leads to fast decoding. For example, the new approach has been shown to reduce the memory consumption by a factor of eight

ImprovedHuffman codingusing recursive splitting
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ABSTRACT Lossless compression of a sequence of symbols is an important part of data and signal compression.Huffman codingis lossless, it is also often used in lossy compression as the final step after decomposition and quantization of a signal. In signal compression, the

Compression usingHuffman coding
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ABSTRACT Data compression is also called as sourcecoding. It is the process of encoding information using fewer bits than an uncoded representation is also making a use of specific encoding schemes. Compression is a technology for reducing the quantity of data used to

Lossless Grey-scale Image Compression using Source Symbols Reduction andHuffman Coding
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ABSTRACT Usage of Image has been increasing and used in many applications. Image compression plays vital role in saving storage space and saving time while sending images over network. A new compression technique proposed to achieve more compression ratio

An improvedHuffman codingmethod for archiving text, images, and music characters in DNA.
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The increasing use of digital technology presents a challenge for existing storage capabilities. The need for a reliable and long-term solution for information storage is further heightened by the prediction that the current magnetic and optical storage will become

Huffman coding
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Summary Huffman codingis used to code values statistically according to their probability of occurence. Short code words are assigned to highly probable values and long code words to less probable values.Huffman codingis used in MPEG-2 to further compress the

Ahuffman codingsection-based steganography for AAC audio
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ABSTRACT Steganography techniques can be used to embed secret information into audio signals. AHuffman codingsection-based steganographic scheme for MPEG-2/4 Advanced AudioCoding(AAC) audio is proposed in this study. Based on the characteristics of

Hybrid Hopfield Neural Network, Discrete Wavelet Transform andHuffman Codingfor Image Recognition
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Summary This work presents a new solution to overcome the obstacle of using Hopfield Neural Network (HNN) with high level images than binary images. While HNN deals with bipolar system for direct input data, still it is not useful for graylevel or color images.

Enhancing efficiency ofHuffman codingusing Lempel Zivcodingfor Image compression
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ABSTRACT Compression is a technology for reducing the quantity of data used to represent any content without excessively reducing the quality of the picture. The need for an efficient technique for compression of images ever increasing because the raw images need large

Design of Quantizers withHuffman Codingfor Laplacian Source
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Quantization is the main step in the process of analog to digital conversion. Quantizers are included in all modern telecommunication systems. With a good choice of quantizer, we can achieve increase of the signal quality and decrease of the bit-rate. VLC (variable length

Fingerprint patterns recognition system usinghuffman coding
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ABSTRACT Computers don't match fingerprints the way human beings do. Instead of looking at the patterns of arches, loops, and whorls, AFISs (Automated Fingerprint Identification Systems) reduce the fingerprint image to a table of two-dimensional vectors. Called

Fault TolerantHuffman Codingfor JPEG ImageCodingSystem
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C Nguyen - ece.ucdavis.edu ABSTRACT In this paper, the tolerance ofHuffman Codingto memory faults is considered. Many pointerbased and array-based data structures are highly nonresilient to faults. A single fault in a memory array or a tree node may result in loss of entire data or an incorrect code

HuffmanModeling for DCT BasedCoding
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ABSTRACT In this paper we present a statistical modeling for DCT events frequency distribution for three images classes: landscape, portrait and document. We show that it is possible to fit a mathematical model capturing the underlying statistical distribution. This

Modeling Data transmission through a Channel Based onHuffman codingand Encryption methods
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ABSTRACT Data transmission through a secure channel requires the attention of many researchers. In this paper, on the basis of an alphabet of ciphers and letters, we propose a model for data transmission through a secure channel. This is achieved at two levels. First

Two-stage Quantizer withHuffman CodingBased on G. 711 Standard
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ABSTRACT This paper considers the implementation ofHuffmancoder forcodingof segments of the quantizer based on the G. 711 standard. The signal quality obtained with the two- stage quantizer satisfies and overreaches the quality value defined by the G. 712 standard

Ternary Tree FGKHuffman CodingTechnique
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Summary In this paper, the focus is on the use of ternary tree over binary tree. First of all, we give the introduction ofHuffman's coding. Then adaptiveHuffman codingis discussed. Here, a one pass Algorithm developed by FGK (Fallar, Gallager, Knuth) for constructing adaptive

A memory-efficientHuffmanadaptivecodingalgorithm for very large sets of symbols
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ABSTRACT The problem of computing the minimum redundancy codes as we observe symbols one by one has received a lot of attention. However, existing algorithm implicitly assumes that either we have a small alphabet-quite typically 256 symbols-or that we have an

Construction of FP Tree usingHuffman Coding.
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Generally, data mining is the process of analyzing data from different perspectives and summarizing it into useful information-information that can be used to increase revenue, cuts costs, or both. Data mining software is one of a number of analytical tools for analyzing

Implementation in Java of a Cryptosystem using a DynamicHuffman Codingand Encryption Methods
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ABSTRACT Data transmission through a secure channel is important in our daily experience with the objective to ensure that the receiver is the only one authorized and able to discover the message content. In this paper, and based upon the proposed model in , we

Huffman codinginspired peer-to-peer multicasting
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ABSTRACT An adaptive algorithm, inspired by theHuffmancode generation, for constructing a network-aware Peer-to-Peer (P2P) video multicast is proposed. The centralized and distributed variants of the algorithm are presented. The shown simulationbased

LOSSLESS INDEXCODINGFOR IMAGE VECTOR QUANTIZATION USINGHUFFMANCODES
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ABSTRACT Image vector quantization (VQ) has many current and future envisioned applications, such as digital image and signal compression, watermarking, data hiding, speaker identification. The idea of lossless indexcodingis to enhance the performance of

Design of Asymmetrical Scalar Quantizer with ExtendedHuffman Codingfor Gaussian Source
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L Velimirovic, Z Peric, M Stankovic, J Nikolic - Druga nacionalna konferencija - mi.sanu.ac.rs In this paper we propose a novel class of asymmetrical two-level scalar quantizers with extendedHuffman codingthat are designed to provide the required quality of the quantized signal, measured by SQNR (Signal to Quantization Noise Ratio), and for the average bit

An Efficient Image Compression Technique using Artificial Neural Network withHuffman Coding
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V Awasthi, SR Gupta - irphouse.com ABSTRACT Image Compression using Artificial Neural Networks (ANN) is significantly different than compressing raw binary data. General purpose compression programs can be used to compress images, but the result is less than optimal. This is because images have certain

SymmetrieHuffman Coding
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KS , W?LS Jung, JH Chung - cadimpact.com ABSTRACT SymmetricHuffmancodes characterized by the feature that first bit of a code is 0 or 1 having the probability of about 0.5 and the rest bits have symmetry were analysed. We have analyzed the performance of symmetric Huffmancodes based on the average code

Enhancement of Security and Embedding Capacity throughHuffman Codingin Steganography
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S Bajpai, K Saxena - ijettcs.org ABSTRACT In this paper, we incorporatedHuffman codingalgorithm in digital image steganography to enhance both the data security and embedding capacity. Data is compressed by variable length compression technique and then embedded in digital

A New Approach For AdaptiveHuffman Coding
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PR Suri, M Goel - Karpagam Journal of Computer Science - karpagamuniversity.edu.in ABSTRACT In this paper, the focus is on the use of ternary tree over binary tree inHuffman coding. First of all, we give the introduction of Huffman's coding. Then adaptiveHuffman codingis discussed. Here, a one pass Algorithm developed by Vitter for constructing

Image Compression using hybrid of DWT, DCT andHuffman Coding
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S Sharma, S Kaur - ijsett.com ABSTRACT This research paper presents a proposed method for the compression of medical images using hybrid compression technique (DWT, DCT andHuffman coding). The objective of this hybrid scheme is to achieve higher compression rates by first applying

Hardware Implementation of EZW based Image Compression withHuffman coding
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S Aiswarya, S Veni - ijesit.com ABSTRACT Embedded Zero-tree Wavelet (EZW) is a wavelet based image compression scheme. It is basically a quantization stage that incorporates some characteristics of the wavelet decomposition. The EZW approach and its descendants significantly outperform

Fault Tolerance Technique inHuffman Codingapplies to Baseline JPEG
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C Nguyen, RG Redinbo - ece.ucdavis.edu ABSTRACT Faults due to the incorrect functioning of the computation system, or the transmission errors of the internal data, could corrupt the output code stream of theHuffman encoder. In this paper, a fault detection method is proposed for theHuffmanencoding

A media-specific FEC based onhuffman codingfor distributed speech recognition.
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ABSTRACT In this paper, we propose a media-specific forward error correction (FEC) method based onHuffman codingfor distributed speech recognition (DSR). In order to mitigate the performance degradation of DSR in noisy channel environments, the importance of each

Huffman Codingand Position basedCodingScheme for Image Compression: An Experimental Analysis
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K Gautam, K Vijayalakshmi - research.ijais.org ABSTRACT The paper attempts a comparison between Huffmancoding and Position Based CodingScheme introduced by the authors. After a review of various image compression standards and image compression coders, it is observed that there is a need to study the

Optimal Maximal PrefixCodingandHuffman Coding
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D Long, W Jia - vuz.zaznai.ru ABSTRACT Huffinancodinghas been widely used in data, image, and video compression. Novel maximal pre?xcodingdijferent from the Hu?inancodingis introduced. Relationships between the Hu?mancodingand optimal maximal prefixcodingare discussed. We show

Information Hiding Based on Discrete Time Wavelet Transform andHuffman Coding
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AAA Rashed - uotechnology.edu.iq ABSTRACT The approach of This paper presentation a companied technique for hiding secret messages (text) based on wavelet transform applying in cover image (a gray level image 8bit) thenHuffmanencoding is also executed on the secret messages, to increase the

Web Page Compression usingHuffman Coding
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M Gupta, B Kumar - core.kmi.open.ac.uk ABSTRACT Compression helps in reducing the redundancy in the data representation so as to reduce the storage requirement of it. Compression is an important technique used to improve web retrieval latency Compression is an important technique used to improve

Test-Data Compression Based on Variable-to-Variablc ReusableHuffman Coding
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X Kavousianos, E Ka31igerosL, D NikoW - cs.uoi.gr ABSTRACT A new efficient statistical test data compression method, suitable for IP cores of unknown structure with multiple scan chains is proposed.Huffman, which is a well known faed-tovariabie code, is used in this paper as a variahle-to-variable code. The pre-

IMAGE COMPRESSION WITH SCALABLE ROI USING ADAPTIVEHUFFMAN CODING
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ABSTRACT Most of the commercial medical image viewers do not provide scalability in image compression and/or encoding/decoding of region of interest (ROI). This paper discusses a medical application that contains a viewer for digital imaging and communications in

Design and analysis of the two-level scalar quantizer with extendedHuffman coding
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L Velimirovic, Z Peric, B Denic - Information theory and complex systems - tinkos.rs Summary Entropycodingis a type of losslesscodingto compress digital data by representing frequently occurring patterns with few bits and rarely occurring patterns with many bits. Two most popular entropycodingschemes areHuffman codingand arithmetic

A New, Fast, Efficient image codec based on SPIHT combined withHuffman coding
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ABSTRACT Image compression represents an efficient way of reducing storage requirements and bandwidth for transmission. The wavelet transform imagecodingtechnology is most efficient because of its high speed, low memory requirements and complete reversibility.

A Bio Inspired Alternative toHuffman Coding
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N TATAR, S HOLBAN - Development and Application Systems - dasconference.ro ABSTRACT In the domain of data compression, theHuffmanalgorithm is one of the most used and referenced algorithm. Since it was published in 1952 by its author David A.Huffman until today, it is still used in a large area of fields. It was constantly changed during the time

FRACTAL IMAGE COMPRESSION USING QUADTREE DECOMPOSITION ANDHUFFMAN CODING
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AG Ananth - 123seminarsonly.com ABSTRACT Fractal image compression can be obtained by dividing the original grey level image into unoverlapped blocks depending on a threshold value and the well known techniques of Quadtree decomposition. By using threshold value of 0.2 andHuffman

HuffmanEntropyCodingfor Grayscale Images
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D Perry, W Wu - williamliwu.com Information theory and communications are integral aspects of our digital lives. Over time, the media we consume grows in both size and complexity. For instance, within only a decade, the digital video industry transitioned from DVD to BluRay, representing roughly a

On the random property of compressed data viaHuffman coding
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YP You, SC Tsai - sslab.cs.nctu.edu.tw ABSTRACT ThoughHuffmancodes [2, 3, 4, 5, 9] have shown their power in data compression, there are still some issues that are not noticed. In the present paper, we address the issue on the random property of compressed data viaHuffman coding. Randomized

Scan order andhuffman codingof 3D DCT coefficients
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T YZA - 2005 - wseas.us ABSTRACT This paper is about video compression method based on the 3D DCT. Properties of this algorithm depend on the way how 3D DCT coefficients are grouped together into output bit stream. In the next text we briefly describe the main components of the encoder

CAM-BasedHuffman CodingArchitecture for Real-Time Applications
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T Kumaki, Y Kuroda, T Koide, HJ Mattausch, H Noda - rcns.hiroshima-u.ac.jp Huffman codingis probably the best known and most widely used data compression technique for many software and hardware applications. GenerallyHuffman codingneeds to prepare a code word table that contains the information of mapping between the real data

A Memory-Efficient AdaptiveHuffman CodingAlgorithm for Very Large Sets of Symbols Revisited
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ABSTRACT While algorithm M (presented in A Memory-EfficientHuffmanAdaptiveCoding Algorithm for Very Large Sets of Symbols, by Steven Pigeon Yoshua Bengio, Universit de Montral technical report# 1081 ) converges to the entropy of the signal, it also

Affable Compression through Lossless Column-OrientedHuffman CodingTechnique
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P Bajaj, SK Dhindsa - iosrjournals.org ABSTRACT Compression is a technique used by many DBMSs to increase performance. Compression improves performance by reducing the size of data on disk, decreasing seek times, increasing the data transfer rate and increasing buffer pool hit rate . Column-

Image Watermarking based onHuffman Codingand Laplace Sharpening
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MM Lafta - jcoeduw.uobaghdad.edu.iq ABSTRACT In this paper, an algorithm through which we can embed more data than the regular methods under spatial domain is introduced. We compressed the secret data usingHuffman codingand then this compressed data is embedded using laplacian sharpening method.

Application of Uniform Quantization andHuffman Codingto the Iterated Block Matching Fractals for Image Compression
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RJ Gonzlez, PG Romn - ece.uprm.edu ABSTRACT The concept of Fractals dates back to Mandelbrot . Improvements were achieved by other researchers such as Barnsley and Jaquin ,[3]. In this work, the Iterated Block Matching Fractals (IBMF)[4] software is being coded using Uniform Quantization (

Effective Compression Technique by Using AdaptiveHuffman CodingAlgorithm for Xml Database
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MRN Gadbail, VS Gulhane - ijltc.excelingtech.co.uk ABSTRACT The Extensible Markup Language (XML) is one of the most important formats for data interchange on the Internet. XML documents are used for data exchange and to store large amount of data over the web. These documents are extremely verbose and require

BetterHuffman Codingvia Genetic Algorithm.
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ABSTRACT We present an approach to compress arbitrary files using aHuffman-like prefix- free code generated through the use of a genetic algorithm, thus requiring no prior knowledge of substring frequencies in the original file. This approach also enables

Formalization Description ofHuffman CodingTrees Using Mizar
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T Ido, H Okazaki, Y Shidama - world-comp.org ABSTRACT Mizar is a type of system known as a" proof checker," which automatically inspects the validity of formal mathematical proofs. Mizar, designed for computational descriptions of mathematics, was developed by Professor A. Trybulec et al. at the University of Bialystok,

A Quantum Analog ofHuffman Coding
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ABSTRACT We analyse a generalization ofHuffman codingto the quantum case. In particular, we notice various dif?culties in using instantaneous codes for quantum communication. However, for the storage of quantum information, we have succeeded in constructing a

Position BasedCodingScheme andHuffman Codingin JPEG2000: An Experimental analysis
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ABSTRACT The paper compares the novel method of position basedcodingscheme introduced recently by the authors withHuffman codingresults. The results show that Position BasedCodingScheme (PBCS) is superior in terms of image compression ratio

Biometric Feature Based Steganography Scheme-An Approach Based On LSB Technique AndHuffman Coding
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B Sharma, S Burje, AG Kulkarni - ijirs.com ABSTRACT A two stage (stego-based-crypto) invertible technique is proposed based on cryptography and steganography algorithms. In order to increase the security, the proposed technique uses Rivest-Shamir-Adleman (RSA) cryptographic algorithm in the first stage for

A NOVEL COMPRESSION SCHEME BASED ON SMVQ ANDHUFFMAN CODING
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ABSTRACT Recently, some image compression techniques have been proposed to obtain better compression rates and thus decrease data storage requirements and improve communications costs. In this paper, we propose a novel lossless image compression

Image Compression using Discrete Cosine Transform and AdaptiveHuffman Coding
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DK Jain, D Gaur, K Gaur, N Jain - ijettcs.org ABSTRACT Image Compression means reducing the volume of data needed in order to represent an Image. Image compress-ion techniques are divided into two main techniques: trans-forms (DCT, JPEG, FFT, and Wavelet) and non transforms (PCM, DPCM). In this

Enhancementof Security and Embedding Capacity throughHuffman Codingin Steganography
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S Bajpai, K Saxena - ijettcs.org ABSTRACT In this paper, we incorporatedHuffman codingalgorithm in digital image steganography to enhance both the data security and embedding capacity. Data is compressed by variable length compression technique and then embedded in digital


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