Sciweavers

DCC
2005
IEEE
14 years 7 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 7 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 7 months ago
Binary Codes for Non-Uniform Sources
Alistair Moffat, Vo Ngoc Anh
DCC
2005
IEEE
14 years 7 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 7 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 7 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 7 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 7 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 7 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 7 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