نتایج جستجو برای: ziv complexity

تعداد نتایج: 320397  

2004
M. Christen T. Ott R. Stoop

Multi-electrode array recordings reveal complex structures in the firing of spatially distributed neurons. The analysis of this neuronal network activity demands a classification of neurons according to similarities in their firing behavior. If similar spike patterns do not occur synchronously, but have unknown delays within spike trains, this processing step is difficult. To solve this problem...

Journal: :Entropy 2015
Lingfeng Liu Suoxia Miao Mengfan Cheng Xiaojing Gao

In this paper, we generalize the permutation entropy (PE) measure to binary sequences, which is based on Shannon’s entropy, and theoretically analyze this measure for random binary sequences. We deduce the theoretical value of PE for random binary sequences, which can be used to measure the randomness of binary sequences. We also reveal the relationship between this PE measure with other random...

2005
Luís Natário Catarina Brites João Ascenso Fernando Pereira

Distributed Video Coding (DVC) is a new video coding approach based on the Wyner-Ziv theorem. Unlike most of the existing video codecs, each frame is encoded separately (either as a key-frame or a Wyner-Ziv frame) which results in a simpler and lighter encoder since complex operations like motion estimation are not performed. The previously decoded frames are used at the decoder to estimate the...

2006
Shantanu Rane Pierpaolo Baccichet Bernd Girod

We model the decoded picture quality at the output of a Systematic Lossy Error Protection (SLEP) scheme for error-resilient transmission of H.264/AVC compressed video signals. In this scheme, a video signal transmitted without channel coding constitutes the systematic portion of the transmission. Errorresilience is provided by transmitting a supplementary bit stream generated by Wyner-Ziv encod...

2006
Gangyi Jiang Zhipeng Jin Mei Yu Tae Young Choi

Because of limitation of low power and computational ability in mobile video devices, it is significant to develop energy-efficient wireless video compression methods for mobile video systems. In this paper, a new approach to low complexity wireless video compression is proposed, based on Wyner-Ziv coding theorem. The proposed method encodes video only by intracoding techniques and detection of...

Journal: :Bioinformatics 2003
Hasan H. Otu Khalid Sayood

MOTIVATION Most existing approaches for phylogenetic inference use multiple alignment of sequences and assume some sort of an evolutionary model. The multiple alignment strategy does not work for all types of data, e.g. whole genome phylogeny, and the evolutionary models may not always be correct. We propose a new sequence distance measure based on the relative information between the sequences...

Journal: :IEEE Trans. Information Theory 1992
Meir Feder Neri Merhav Michael Gutman

Abstruct-The problem of predicting the next outcome of an individual binary sequence using finite memory, is considered. The finite-state predictability of an infinite sequence is defined as the minimum fraction of prediction errors that can be made by any finite-state (FS) predictor. It is proved that this FS predictability can be attained by universal sequential prediction schemes. Specifical...

Journal: :J. Comb. Optim. 2005
Chung Keung Poon Wai Keung Yiu

In this paper, we study the problem of supporting range sum queries on a compressed sequence of values. For a sequence of n k-bit integers, k ≤ O(log n), our data structures require asymptotically the same amount of storage as the compressed sequence if compressed using the Lempel-Ziv algorithm. The basic structure supports range sum queries in O(log n) time. With an increase by a constant fact...

2003
Shantanu Rane Anne Aaron Bernd Girod

We present a novel scheme for error-resilient digital video broadcasting, using the Wyner-Ziv coding paradigm. We apply the general framework of systematic lossy source-channel coding to generate a supplementary bitstream that can correct transmission errors in the decoded video waveform up to a certain residual distortion. The systematic portion consists of a conventional MPEG-coded bitstream,...

2003
Anne Aaron Shantanu Rane David Rebollo-Monedero Bernd Girod

A novel scheme for error-resilient digital video broadcasting, using Wyner-Ziv coding, is presented in this paper. We apply the general framework of systematic lossy source-channel coding to generate a supplementary bitstream that can correct transmission errors in the decoded video waveform up to a certain residual distortion. The systematic portion consists of a conventional MPEG-coded bitstr...

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