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What (who) is image compression - definition

Image compression

REDUCTION OF IMAGE SIZE TO SAVE STORAGE AND TRANSMISSION COSTS

Image Compression; Lossless image compression; Algorithms for image compression; Lossy image compression; Image file compression; Compressed image

Image compression is a type of data compression applied to digital images, to reduce their cost for storage or transmission. Algorithms may take advantage of visual perception and the statistical properties of image data to provide superior results compared with generic data compression methods which are used for other digital data.

https://en.wikipedia.org/wiki/Image_compression

Compression artifact

NOTICEABLE DISTORTION OF MEDIA CAUSED BY THE APPLICATION OF LOSSY DATA COMPRESSION

Compression artefact; Compression artifacts; Block artifact; JPEG artifacts; JPEG artifact; Compression artefacts; JPEG compression artifacts; Mosquito noise; Datamoshing; Datamosh; JPEG artefacts; Mosquito artifact; JPEG artefact; Jpg artifacting; Jpeg artefacts; JPG artefacting; Lossy compression artefact; Lossy compression artifact; Data moshing; Video compression artifact; Image compression artifact; Artifact (compression)

A compression artifact (or artefact) is a noticeable distortion of media (including images, audio, and video) caused by the application of lossy compression. Lossy data compression involves discarding some of the media's data so that it becomes small enough to be stored within the desired disk space or transmitted (streamed) within the available bandwidth (known as the data rate or bit rate).

https://en.wikipedia.org/wiki/Compression_artifact

lossy

DATA COMPRESSION APPROACH THAT RESULTS IN LOSS OR CHANGE OF SOME DATA

Lossy; Lossy encoding; Lossy data compression; Data compression/lossy; List of lossy compression methods; Irreversible compression

<algorithm> A term describing a data compression algorithm which actually reduces the amount of information in the data, rather than just the number of bits used to represent that information. The lost information is usually removed because it is subjectively less important to the quality of the data (usually an image or sound) or because it can be recovered reasonably by interpolation from the remaining data. MPEG and JPEG are examples of lossy compression techniques. Opposite: lossless. (1995-03-29)