In this paper we consider the class of anti-uniform Huffman (AUH) codes for sources with infinite alphabet. Poisson, negative binomial, geometric and exponential distributions lead to infinite anti – uniform sources for some ranges of their parameters. Huffman coding of these sources results in AUH codes. We prove that as a result of this encoding, we obtain sources with memory. For these sourc...

This paper describes a fast, low-complexity, entropy efficient video coder for wavelet pyramids. This coder approaches the entropy-limited coding rate of video wavelet pyramids, is fast in both hardware and software implementations, and has low complexity (no multiplies) for use in ASICs. It consists of a modified Z-coder used to code the zero/non-zero significance function and Huffman coding f...

We complete the classification of all Lee-extremal and Lee-optimal self-dual codes over F2 + uF2 of lengths 9 through 20 that have a nontrivial odd order automorphism begun in [W.C. Huffman, On the decomposition of self-dual codes over F2 + uF2 with an automorphism of odd prime order, Finite Fields Appl., in press]. Along the way, we find all Lee-extremal self-dual codes over F2 + uF2 of length...

Upper bounds on the redundancy of Huffman codes have been extensively studied in the literature. Almost all of these bounds are in terms of the probability of either the most likely or the least likely source symbol. In this correspondence, we prove a simple upper bound in terms of the probability of any source symbol.

Mark Huffman asks what happened to the polypill to reduce cardiovascular risk, explores the promise it still holds, and considers how best to turn promise into reality.

The image data compression has been an active research area for image processing over the last decade [1] and has been used in a variety of applications. This paper investigates the implementation of Low Power VLSI architecture for image compression, which uses Variable Length Coding method to compress JPEG signals [1]. The architecture is proposed for the quantized DCT output [5]. The proposed...