| 释义 |
JPEG, n. Computing.
Brit. |ˈdʒeɪpɛg|, U.S. |ˈdʒeɪˌpeg|
Forms: [Also with lower-case initials.]
[Acronym ‹ the initial letters of J oint Photographic Experts Group, the name of the committee that devised the standard.]
Any of various techniques and standards for the compression of continuous-tone still images such as photographs; usu. attrib., 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).
1988Electronic Syst. Design Mag. Nov. 28/3 Figure 1 shows enlarged samples of portions of the JPEG test images. 1989Electronic 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. 1993Sci. 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. 1997Escape Mar.–Apr. 40/1 There's a fair smattering of gossip, [and] a few jpegs of famous heads ‘grafted’ onto porn actors and actresses. 2001Guardian (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. |