Context Based Binary Arithmetic Coding (CBAC) is a part of JZ profile of Audio Video Coding Standard (AVS).The goal of this paper is to present the efficient hardware based binary arithmetic coder which is the main part of binarisation involved in CBAC of AVS. This paper explains about the efficient arithmetic coding involved in the video transcoding. The major concerns of using JZ profile of A...

Top-k query is one of important queries in wireless sensor networks (WSNs). It provides the k highest or lowest data collected in the entire network. Due to abundant resources and high efficiency, many future large-scale WSNs are expected to follow a two-tiered architecture with resource-rich master nodes. However, the sensor network is unattended and insecure. Since master nodes store data col...

In this note, we show that the encoding scheme discussed in [1] for quadrilateral meshes can be improved to 2.40 bits per vertex, using arithmetic coding. This is a considerable improvement over the current bound of 2.67 bits per vertex.

We analyze the expected delay for infinite precision arithmetic codes, and suggest a practical implementation that closely approximates the idealized infinite precision model.

Arithmetic coding provides an e ective mechanism for removing redundancy in the encoding of data. We show how arithmetic coding works and describe an e cient implementation that uses table lookup as a fast alternative to arithmetic operations. The reduced-precision arithmetic has a provably negligible e ect on the amount of compression achieved. We can speed up the implementation further by use...

The use of arithmetic coding for binary image compression achieves a high compression ratio while the running time remains rather slow. A composite modelling method presented in this paper reduces the size of the data to be coded by arithmetic coding. The method is to code the uniform areas with less computation and apply arithmetic coding to the areas with more variation.