Very High Speed Entropy Coding
نویسندگان
چکیده
Efforts to build high-speed hardware for many different entropy coders are limited by fundamental feedback loops. Here is a method that allows for parallel compression in hardware. This parallelism results in extremely high rates, lo0 million symbolskecond or higher. The system is generalizable to any lossless or lossy system with deterministic decompression. Prototype hardware that divides the data into multiple streams that feed parallel coders is presented here. The problem of efficient transmission of multiple streams of variable-length coded data is solved by a unique coded data interleave method.
منابع مشابه
An efficient VLSI implementation of H.264/AVC entropy decoder
This paper proposes an efficient H.264/AVC entropy decoder. It requires no ROM/RAM fabrication process that decreases fabrication cost and increases operation speed. It was achieved by optimizing lookup tables and internal buffers, which significantly improves area, speed, and power. The proposed entropy decoder does not exploit embedded processor for bitstream manipulation, which also improves...
متن کاملTowards Development of Efficient Compression Techniques for Different Types of Source Data
This Chapter summarizes and concludes our research work. Our work is mainly in the area of lossless data compression using arithmetic coding. Arithmetic coding is used to compress any type of source data. It falls under entropy coding compression methods and is most widely used as a replacement of Huffman encoding entropy method due to its nearly optimal entropy. It is also used with most of th...
متن کاملAn adaptive-search residual vector quantizer for airborne reconnaissance
A lossy image compression algorithm designed for highspeed, high quality data applications is described. The algorithm consists of a vector quantizer followed by a modified Huffman entropy encoder. The quantizer is a meanremoved, adaptive-search, residual vector quantizer. A few details of a high-speed hardware implementation for reconnaissance are given, as well as an example of the performanc...
متن کاملAsymmetric numeral systems: entropy coding combining speed of Huffman coding with compression rate of arithmetic coding
The modern data compression is mainly based on two approaches to entropy coding: Huffman (HC) and arithmetic/range coding (AC). The former is much faster, but approximates probabilities with powers of 2, usually leading to relatively low compression rates. The latter uses nearly exact probabilities easily approaching theoretical compression rate limit (Shannon entropy), but at cost of much larg...
متن کاملHigh Order Entropy-Constrained Residual VQ for Lossless Compression of Images
-High order entropy coding is a powerful technique for exploiting high order statistical dependencies. However, the exponentially high complexity associated with such a method often discourages its use. In this paper, an entropy-constralned residual vector quantization method is proposed for lossless compression of images. The method consists of first quantizing the input image using a high ord...
متن کامل