slovodefinícia
Lossy compression
(gcide)
Compression \Com*pres"sion\, n. [L. compressio: cf. F.
compression.]
1. The act of compressing, or state of being compressed.
"Compression of thought." --Johnson.
[1913 Webster]

2. (Computers) reduction of the space required for storage
(of binary data) by an algorithm which converts the data
to a smaller number of bits while preserving the
information content. The act of compressing [3].

Note: Compression may be lossless compression, in which all
of the information in the original data is preserved,
and the original data may be recovered in form
identical to its original form; or lossy compression,
in which some of the information in the original data
is lost, and decompression results in a data form
slightly different from the original. {Lossy
compression} is used, for example, to compress audio or
video recordings, and sometimes images, where the
slight differences in the original data and the data
recovered after lossy compression may be
imperceptable to the human eye or ear. The JPEG
format is produced by a lossy compression algorithm.
[PJC]
lossy compression
(gcide)
lossy compression \los"sy com*pres"sion\, n. (Computers)
The compression of binary data into a form which, when it is
re-expanded, has most, but not all, of the original
information. It is used primarily for compression of images
and sounds, and is designed to provide a high degree of
compression at the cost of a slight loss of data. It is
expemplified by the JPEG compression standard. Images
compressed by a lossy compression algorithm are re-expanded
into an image close, but not identical to the original image;
the difference between the original and the reconstructed
image may be imperceptible to normal viewing by the eye.
[PJC]
podobné slovodefinícia
Lossy compression
(gcide)
Compression \Com*pres"sion\, n. [L. compressio: cf. F.
compression.]
1. The act of compressing, or state of being compressed.
"Compression of thought." --Johnson.
[1913 Webster]

2. (Computers) reduction of the space required for storage
(of binary data) by an algorithm which converts the data
to a smaller number of bits while preserving the
information content. The act of compressing [3].

Note: Compression may be lossless compression, in which all
of the information in the original data is preserved,
and the original data may be recovered in form
identical to its original form; or lossy compression,
in which some of the information in the original data
is lost, and decompression results in a data form
slightly different from the original. {Lossy
compression} is used, for example, to compress audio or
video recordings, and sometimes images, where the
slight differences in the original data and the data
recovered after lossy compression may be
imperceptable to the human eye or ear. The JPEG
format is produced by a lossy compression algorithm.
[PJC]lossy compression \los"sy com*pres"sion\, n. (Computers)
The compression of binary data into a form which, when it is
re-expanded, has most, but not all, of the original
information. It is used primarily for compression of images
and sounds, and is designed to provide a high degree of
compression at the cost of a slight loss of data. It is
expemplified by the JPEG compression standard. Images
compressed by a lossy compression algorithm are re-expanded
into an image close, but not identical to the original image;
the difference between the original and the reconstructed
image may be imperceptible to normal viewing by the eye.
[PJC]

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