Étiquette : Compression

In digital signal processing, data compression, source coding, or bit-rate reduction involves encoding information using fewer bits than the original representation. Compression can be either lossy or lossless. Lossless compression reduces bits by identifying and eliminating statistical redundancy. No information is lost in lossless compression. Lossy compression reduces bits by identifying unnecessary information and removing it. The process of reducing the size of a data file is referred to as data compression. In the context of data transmission, it is called source coding (encoding done at the source of the data before it is stored or transmitted) in opposition to channel coding.


Zlib zlib – compression/decompression library SYNOPSIS [see zlib.h for full description] DESCRIPTION The zlib library is a general purpose data compression library. The code is thread safe. It provides in-memory compression and decompression functions, including integrity checks of the uncompressed data. This version of the library supports only one compression method (deflation) but other algorithms […]


Outil de compression. Le format ECM vous permet de réduire la taille d’un fichier d’image CD classique (BIN, CDI, NRG, CCD, ou tout autre format qui utilise les secteurs bruts. Il agit d’éliminer l’erreur de correction / détection des codes (ECC / EDC) de chaque secteur autant que possible. L’encodeur s’adapte automatiquement aux types de […]