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Related to lossless: Lossless compression


(algorithm, compression)
A term describing a data compression algorithm which retains all the information in the data, allowing it to be recovered perfectly by decompression.

Unix compress and GNU gzip perform lossless compression.

Opposite: lossy.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

lossless compression

A compression technique that decompresses data back to its original form without any loss. The decompressed file and the original are identical. All compression methods used to compress text, databases and other business data are lossless. For example, the ZIP archiving technology (PKZIP, WinZip, etc.) is the most widely used lossless method (see ZIP file).

Lossless vs. Lossy Audio
Audio and video use "lossy" compression, which means bits deemed unnecessary for human hearing or viewing are discarded and never restored. However, for high-quality music listening, there are also lossless audio compression methods. For example, FLAC, Apple Lossless (ALAC) and WMA Lossless compress audio files on a music CD to less than their original size. The resulting files are nowhere near as small as the lossy MP3 and AAC methods but no bits (no frequencies) are discarded. See lossy compression, high-resolution audio, Apple Lossless, WMA Lossless, FLAC and codec examples.

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References in periodicals archive ?
OPPO said that the triple camera system seamlessly enables the 10x lossless zoom where the 48MP primary camera guarantees photo quality and the telephoto camera combined with the ultra-wide camera ensures high-quality long distance shots.
One of them is Lossless JPEG that is the lossless version of this standard.
To address these problems further, in our previous work [ 10], we proposed an edge adaptive hierarchical interpolation (EAHINT) algorithm for lossless image coding and progressive transmission.
With a bigger batch of particles, most of them will bump into each other more often than they hit the walls, and these collisions are "lossless" - the total energy of the colliding particles is preserved.
Engadget reports that sources from The Verge and Reddit users were the ones to make the discovery regarding Spotify's upcoming lossless offering, dubbed 'Spotify Hi-Fi'.
Suppose a pulse excites the ideal lossless chamber, the chamber can seem to be a system, and an arbitrary scalar electric field x(t) sampled in the working volume of the chamber is the response of the pulse.
Although most engineered materials are not lossless, some interesting structures are made purely from metallic elements, and may be approximated as lossless.
* lossless rescaling of existing JPEG image files and other lossless transformation functions (crop, rotate, etc.)
There are generally categorize addicted to two module called lossless and loss firmness procedure.
A high performance lossless color image compression and decompression techniques (Hallnor et al, 2005 and Roy et al, 2001) is used to reduce both memory requirements and bandwidth.
Jared Stein, vice president of research and education at Instructure, said the focus this year will be on "lossless learning," a concept introduced at his company's InstructureCon this summer.