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DCC
2008
IEEE
15 years 9 months ago
Idempotents in the neighbourhood of Patterson-Wiedemann functions having Walsh spectra zeros
In this paper we study the neighbourhood of 15-variable Patterson-Wiedemann (PW) functions, i.e., the functions that differ by a small Hamming distance from the PW functions in te...
Sumanta Sarkar, Subhamoy Maitra
DCC
2008
IEEE
15 years 9 months ago
On Boolean functions with the sum of every two of them being bent
A set of Boolean functions is called a bent set if the sum of any two distinct members is a bent function. We show that any bent set yields a homogeneous system of linked symmetric...
Christian Bey, Gohar M. M. Kyureghyan
DCC
2008
IEEE
15 years 9 months ago
Explicit constructions for perfect hash families
Let k, v, t be integers such that k v t 2. A perfect hash family PHF(N; k, v, t) can be defined as an N ? k array with entries from a set of v symbols such that every N ?t suba...
Sosina Martirosyan, Tran van Trung
DCC
2008
IEEE
15 years 9 months ago
Intra Prediction via Edge-Based Inpainting
We investigate the usage of edge-based inpainting as an intra prediction method in block-based image compression. The joint utilization of edge information and the well-known Lapl...
Dong Liu, Xiaoyan Sun, Feng Wu
DCC
2008
IEEE
15 years 4 months ago
Adaptive Compression of Graph Structured Text
In this paper we introduce an adaptive technique for compressing small quantities of text which are organized as a rooted directed graph. We impose a constraint on the technique s...
John Gilbert, David M. Abrahamson