منابع مشابه
FPGA Based Data Compression using Dictionary based LZW Algorithm
Field Programmable Gate Array (FPGA) technology has become a viable target for the implementation of algorithms in different compression methods applications. In a distributed environment, large data files remain a major bottleneck. Compression is an important component of the solutions available for creating file sizes of manageable and transmittable dimensions. When high-speed media or channe...
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This paper presents a new LZW data compression algorithm that partitions conventional single large dictionary into a dictionary set that consists of several small address space dictionaries. As doing so the dictionary set not only has small lookup time but also can operate in parallel. Simulation results show that the proposed algorithm has better compression ratio for image data than conventio...
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In compressed data, there is not enough room available for data hiding, consequently many data hiding methods try to modify original data before compression. One of well-known lossless compression methods is LZW. It has been widespread due to wide use of GIF format. In spite of its reputation on compression, however, few data hiding methods are directly applicable to LZW itself. This may be due...
متن کاملHuffman Based LZW Lossless Image Compression Using Retinex Algorithm
Image compression is an application of data compression that encodes the original image with few bits. The objective of image compression is to reduce irrelevance and redundancy of the image data in order to be able to store or transmit data in an efficient form. So image compression can reduce the transmit time over the network and increase the speed of transmission. In Lossless image compress...
متن کاملRedundant Reduced LZW (RRLZW) Technique of Lossless Data Compression
Technology is growing in every aspect but the basic needs to save the memory and time utilization still remains. Whenever we deal with any kind of data, we are bound to compress the data to minimize the space utilization. Data compression can be lossy or lossless. Some efficient lossless data compression techniques are Huffman coding, Run-length coding, LempelZiv-Welch (LZW) coding. Lempel–Ziv–...
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ژورنال
عنوان ژورنال: International Journal of Advanced Information Technology
سال: 2012
ISSN: 2231-1920
DOI: 10.5121/ijait.2012.2503