Sciweavers

DCC
2005
IEEE
14 years 11 months ago
Efficient Alphabet Partitioning Algorithms for Low-Complexity Entropy Coding
We analyze the technique for reducing the complexity of entropy coding consisting in the a priori grouping of the source alphabet symbols, and in dividing the coding process in tw...
Amir Said
DCC
2005
IEEE
14 years 11 months ago
Real, Tight Frames with Maximal Robustness to Erasures
Motivated by the use of frames for robust transmission over the Internet, we present a first systematic construction of real tight frames with maximum robustness to erasures. We a...
Jelena Kovacevic, Markus Püschel
DCC
2005
IEEE
14 years 11 months ago
Binary Codes for Non-Uniform Sources
Alistair Moffat, Vo Ngoc Anh
DCC
2005
IEEE
14 years 11 months ago
Lossless Data Compression Using Optimal Tree Machines
We discuss a lossless data compression system that uses fixed Tree Machines to encode data. The idea is to create a sequence of Tree Machines and a robust escape method aimed at p...
Gergely Korodi, Jorma Rissanen, Ioan Tabus
DCC
2005
IEEE
14 years 11 months ago
A Point-Set Compression Heuristic for Fiber-Based Certificates of Authenticity
A certificate of authenticity (COA) is an inexpensive physical object that has a random unique structure with high cost of near-exact reproduction. An additional requirement is th...
Darko Kirovski
DCC
2005
IEEE
14 years 11 months ago
Distributed Source Coding in Dense Sensor Networks
We study the problem of the reconstruction of a Gaussian field defined in [0, 1] using N sensors deployed at regular intervals. The goal is to quantify the total data rate require...
Akshay Kashyap, Cathy H. Xia, Luis Alfonso Lastras...
DCC
2005
IEEE
14 years 11 months ago
Using 2: 1 Shannon Mapping for Joint Source-Channel Coding
Fredrik Hekland, Geir E. Øien, Tor A. Ramst...
DCC
2005
IEEE
14 years 11 months ago
Quantization of Multiple Sources Using Integer Bit Allocation
Asymptotically optimal bit allocation among a set of quantizers for a finite collection of sources was determined in 1963 by Huang and Schultheiss. Their solution, however, gives ...
Benjamin Farber, Kenneth Zeger
DCC
2005
IEEE
14 years 11 months ago
On the Entropy Rate of Pattern Processes
Abstract--We study the entropy rate of pattern sequences of stochastic processes, and its relationship to the entropy rate of the original process. We give a complete characterizat...
George M. Gemelos, Tsachy Weissman
DCC
2005
IEEE
14 years 11 months ago
Coding the Wavelet Spatial Orientation Tree with Low Computational Complexity
ct A very fast, low complexity algorithm for resolution scalable and random access decoding is presented. The algorithm is based on AGP (Alphabet and Group Partitioning) [1], where...
Yushin Cho, Amir Said, William A. Pearlman