JPEGn.

Brit.

/ˈdʒeɪpɛɡ/, U.S.

/ˈdʒeɪˌpɛɡ/

Forms: also with lower-case initials.

Origin: Formed within English, as an acronym. Etymon: English Joint Photographic Experts Group.

Etymology: Acronym < the initial letters of Joint Photographic Experts Group, the name of the committee that devised the standard.

Computing.

Any of various techniques and standards for the compression of continuous-tone still images such as photographs; usually attributive, esp. designating images encoded according to such a standard. Also: an image encoded in this way; a file in which such an image is held (usually named with the file extension .jpg).

ΚΠ

1988 Electronic Syst. Design Mag. Nov. 28/3 Figure 1 shows enlarged samples of portions of the JPEG test images.

1989 Electronic Syst. Design Mag. Dec. 18/1 Following the JPEG proposed standard, color information reduction accounts for the greatest amount of compression, with edge information making up the minority.

1993 Sci. Amer. July 89/3 JPEG takes as long to decompress an image as to compress it, and it produces blocky ‘pixelation’ as compression ratios rise above about 20:1.

1997 Escape Mar. 40/1 There's a fair smattering of gossip, [and] a few jpegs of famous heads ‘grafted’ onto porn actors and actresses.

2001 Guardian (Electronic ed.) 21 June As a Windows bitmap (bmp) file, it will be rather large, but if you save it as a JPEG (jpg) file, it will take up much less room for a slight loss in quality.

This is a new entry (OED Third Edition, September 2003; most recently modified version published online March 2022).

单词	jpeg
释义	JPEGn. Brit. /ˈdʒeɪpɛɡ/, U.S. /ˈdʒeɪˌpɛɡ/ Forms: also with lower-case initials. Origin: Formed within English, as an acronym. Etymon: English Joint Photographic Experts Group. Etymology: Acronym < the initial letters of Joint Photographic Experts Group, the name of the committee that devised the standard. Computing. Any of various techniques and standards for the compression of continuous-tone still images such as photographs; usually attributive, esp. designating images encoded according to such a standard. Also: an image encoded in this way; a file in which such an image is held (usually named with the file extension .jpg). ΚΠ 1988 Electronic Syst. Design Mag. Nov. 28/3 Figure 1 shows enlarged samples of portions of the JPEG test images. 1989 Electronic Syst. Design Mag. Dec. 18/1 Following the JPEG proposed standard, color information reduction accounts for the greatest amount of compression, with edge information making up the minority. 1993 Sci. Amer. July 89/3 JPEG takes as long to decompress an image as to compress it, and it produces blocky ‘pixelation’ as compression ratios rise above about 20:1. 1997 Escape Mar. 40/1 There's a fair smattering of gossip, [and] a few jpegs of famous heads ‘grafted’ onto porn actors and actresses. 2001 Guardian (Electronic ed.) 21 June As a Windows bitmap (bmp) file, it will be rather large, but if you save it as a JPEG (jpg) file, it will take up much less room for a slight loss in quality. This is a new entry (OED Third Edition, September 2003; most recently modified version published online March 2022). < n.1988
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