计算机技术与发展
計算機技術與髮展
계산궤기술여발전
COMPUTER TECHNOLOGY AND DEVELOPMENT
2014年
9期
41-44
,共4页
无损压缩%元素合并%1元即时码%区分码
無損壓縮%元素閤併%1元即時碼%區分碼
무손압축%원소합병%1원즉시마%구분마
lossless compression%element merging%one-unit code%distinction code
通过对Huffman编码方法的研究,文中提出了一种基于多参数的数据无损压缩算法。基于原始数据集的元素个数统计,对原始数据集进行多次的合并,使合并后所得到的新数据集满足Huffman最佳编码要求,由此生成规模较小的数据合并对应表,并将数据编码分为一元即时码(前缀)和区分码(后缀)两个部分。数据多次合并的不同起始点为文中无损压缩方法的多参数,利用这些参数结合编码前缀及后缀即可唯一表示原始数据,去除了编码表。解码时无需逐位匹配即可复原原始数据。与传统方法相比,文中构造的基于多参数的数据无损压缩方法,编码结构简单,运算开销小,编解码效率较高。
通過對Huffman編碼方法的研究,文中提齣瞭一種基于多參數的數據無損壓縮算法。基于原始數據集的元素箇數統計,對原始數據集進行多次的閤併,使閤併後所得到的新數據集滿足Huffman最佳編碼要求,由此生成規模較小的數據閤併對應錶,併將數據編碼分為一元即時碼(前綴)和區分碼(後綴)兩箇部分。數據多次閤併的不同起始點為文中無損壓縮方法的多參數,利用這些參數結閤編碼前綴及後綴即可唯一錶示原始數據,去除瞭編碼錶。解碼時無需逐位匹配即可複原原始數據。與傳統方法相比,文中構造的基于多參數的數據無損壓縮方法,編碼結構簡單,運算開銷小,編解碼效率較高。
통과대Huffman편마방법적연구,문중제출료일충기우다삼수적수거무손압축산법。기우원시수거집적원소개수통계,대원시수거집진행다차적합병,사합병후소득도적신수거집만족Huffman최가편마요구,유차생성규모교소적수거합병대응표,병장수거편마분위일원즉시마(전철)화구분마(후철)량개부분。수거다차합병적불동기시점위문중무손압축방법적다삼수,이용저사삼수결합편마전철급후철즉가유일표시원시수거,거제료편마표。해마시무수축위필배즉가복원원시수거。여전통방법상비,문중구조적기우다삼수적수거무손압축방법,편마결구간단,운산개소소,편해마효솔교고。
According to the study and analysis of Huffman coding method, propose a kind of lossless compression algorithm which is based on multi-parameter. Through sort and statistical for the number of original data,then merge them to meet the requirement of best Huffman encoding,thereby generating a data merging table which occupies less space,and encode the original data which is divided to one-unit code ( prefix code) and distinction code ( suffix code) . The start point of the data merging is the multi-parameter in this re-search. The original data can be determined by using these parameter. There is no need to bit by bit matching or generating encoding table when decoding. Compared with the original method,the lossless compression algorithm which is based on multi-parameter has simple coding structure and operating. It has higher efficiency in both coding and decoding.