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检索条件"主题词=Arithmetic coding"
480 条 记 录,以下是271-280 订阅
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Resolution Scalable Image coding With Reversible Cellular Automata
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IEEE TRANSACTIONS ON IMAGE PROCESSING 2011年 第5期20卷 1461-1468页
作者: Cappellari, Lorenzo Milani, Simone Cruz-Reyes, Carlos Calvagno, Giancarlo Univ Padua Dept Informat Engn I-35131 Padua Italy Univ Rovira & Virgili Res Grp Math Linguist Tarragona 43002 Spain
In a resolution scalable image coding algorithm, a multiresolution representation of the data is often obtained using a linear filter bank. Reversible cellular automata have been recently proposed as simpler, nonlinea... 详细信息
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Ratio-modified block truncation coding algorithms for reduced bitrates
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IMAGING SCIENCE JOURNAL 2011年 第1期59卷 25-31页
作者: Natarajan, S. Rao, Y. V. Ramana Bannari Amman Inst Technol Dept Elect & Commun Engn Sathyamangalam 638401 Tamilnadu India Anna Univ Coll Engn Dept Elect & Commun Engn Madras 600025 Tamil Nadu India
Block truncation coding (BTC) technique is a simple and fast image compression algorithm since complicated transforms are not used. The principle used in BTC algorithm is to use two-level quantiser that adapts to loca... 详细信息
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BINARY-UNCODED IMAGE AND VIDEO COMPRESSION USING SPIHT-ZTR coding
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INTERNATIONAL JOURNAL OF IMAGE AND GRAPHICS 2011年 第3期11卷 415-437页
作者: Chia, Wai Chong Chew, Li Wern Ang, Li-Minn Seng, Kah Phooi Univ Nottingham Sch Elect & Elect Engn Selangor 43500 Malaysia
When the embedded zerotree wavelet (EZW) algorithm was first introduced by Shapiro, four types of symbols (zerotree (ZTR), isolated zero (IZ), positive (POS), and negative (NEG)) were used to represent the tree struct... 详细信息
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Cryptanalysis of a chaos-based cryptosystem with an embedded adaptive arithmetic coder
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Chinese Physics B 2011年 第8期20卷 97-105页
作者: 王兴元 谢旖欣 School of Electronic & Information Engineering Dalian University of Technology
In this paper, we analyse a new chaos-based cryptosystem with an embedded adaptive arithmetic coder, which was proposed by Li Heng-Jian and Zhang J S (Li H J and Zhang J S 2010 Chin. Phys. B 19 050508). Although thi... 详细信息
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Design of new format for mass data compression
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The Journal of China Universities of Posts and Telecommunications 2011年 第1期18卷 121-128页
作者: QIN Jian-cheng BAI Zhong-ying School of Computer Science Beijing University of Posts and Telecommunications Beijing 100876 China
In the field of lossless compression, most kinds of traditional software have some shortages when they face the mass data. Their compressing abilities are limited by the data window size and the compressing format des... 详细信息
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A two-dimensional approach for lossless EEG compression
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BIOMEDICAL SIGNAL PROCESSING AND CONTROL 2011年 第4期6卷 387-394页
作者: Srinivasan, K. Dauwels, Justin Reddy, M. Ramasubba Indian Inst Technol Dept Appl Mech Biomed Engn Grp Madras 600036 Tamil Nadu India Nanyang Technol Univ Sch Elect & Elect Engn Singapore 639798 Singapore
In this paper, we study various lossless compression techniques for electroencephalograph (EEG) signals. We discuss a computationally simple pre-processing technique, where EEG signal is arranged in the form of a matr... 详细信息
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Improved ECG compression method using discrete cosine transform
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ELECTRONICS LETTERS 2011年 第2期47卷 87-+页
作者: Bendifallah, A. Benzid, R. Boulemden, M. Univ Batna Fac Technol Dept Elect Engn Batna 05000 Algeria
An improvement of a discrete cosine transform (DCT)-based method for electrocardiogram (ECG) compression is presented. The appropriate use of a block based DCT associated to a uniform scalar dead zone quantiser and ar... 详细信息
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JOINT ALGORITHM-ARCHITECTURE OPTIMIZATION OF CABAC TO INCREASE SPEED AND REDUCE AREA COST
JOINT ALGORITHM-ARCHITECTURE OPTIMIZATION OF CABAC TO INCREA...
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IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
作者: Sze, Vivienne Chandrakasan, Anantha P. MIT Cambridge MA 02139 USA
To address the increasing demand for higher resolution and frame rates, processing speed (i.e. performance) and area cost need to be considered in the development of next generation video coding. Accordingly, both alg... 详细信息
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Image Compression Using Two Dimensional Spherical Coder in Wavelet Lifting
Image Compression Using Two Dimensional Spherical Coder in W...
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1st International Conference on Computer Science, Engineering and Information Technology (CCSEIT 2011)
作者: Panimalar, S. Anisha, R. Gomathi, M. Manonmaniam Sundaranar Univ Tirunelveli India
In recent years, many wavelet coders that use various spatially adaptive coding technique to compress the image. Level of flexibility and the coding efficiency are two crucial issues in spatially adaptive methods. So ... 详细信息
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A Fast, Efficiency-Preserving System for Simultaneous Compression & Encryption
A Fast, Efficiency-Preserving System for Simultaneous Compre...
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Conference on Mobile Multimedia/Image Processing, Security, and Applications 2011
作者: Metzler, Richard E. L. Agaian, Sos S. Univ Texas San Antonio Dept Elect & Comp Engn San Antonio TX 78249 USA
Methods for embedment of stream cipher rules into compressive Elias-type entropy coders are presented. Such systems have the ability to simultaneously compress and encrypt input data;thereby providing a fast and secur... 详细信息
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