A process of reducing the length of data so that it can be reproduced. Data compression can reduce transmission time and the amount of storage media used. Data compression is a type of encoding, and is also called source encoding or high-efficiency encoding. Data compression is broadly classified into two types: lossless compression, which compresses data so that the original data (bit string) can be reproduced perfectly when restored, and lossy compression, which compresses data so that only the necessary information can be restored. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
再現できる形でデータ長を小さくする処理。データ圧縮を行うことで伝送時間や記憶媒体の使用量を削減することができる。データ圧縮は符号化の一種であり,情報源符号化や高能率符号化と呼ばれることもある。 データ圧縮は復元したときに元のデータ(ビット列)を完全に再現できるように圧縮する無歪み圧縮(可逆符号化,lossless compression)と必要な情報だけを復元できるように圧縮する歪みありの圧縮(非可逆符号化,lossy compression)の二つに大きく分類される。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
>>: New Year's Parade - Dezomeshiki
German metallurgist and inventor of duralumin. In...
A town in Shimohei County in eastern Iwate Prefect...
Paper made with long fibers of hand-torn kozo (pap...
…The parietal glands of toads are an example. In ...
Born: May 15, 1866 in Tübingen Died May 23, 1926. ...
A village in Nishitsugaru County, western Aomori P...
→Mofu Account Source : Heibonsha Encyclopedia Abou...
A poet of medieval German court lyric poetry (Min...
This refers to the earliest stage in the evolution...
A country in northwestern Africa facing the Medite...
A treaty signed in Tordesillas, Spain in 1494 betw...
The name of the one God in Islam. Etymologically,...
A consumption tax levied by municipalities on elec...
The capital of Kursk Oblast in western Russia. Lo...
…It is also called the Crab Canon. (2) and (3) ar...