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Topic: Joint Photographic Experts Group


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  Smart Computing Encyclopedia Entry - Joint Photographic Experts Group (JPEG)   (Site not responding. Last check: 2007-10-27)
JPEG images are frequently used on the World Wide Web because JPEG technology can reduce the size of a photo image file to as little as 5% of its original size.
JPEG also does not do a good job with line drawings, cartoons, text, and other simple fl-and-white images with sharp lines of contrast.
JPEG is used only for still images, but a similar image file format, MPEG (Moving Pictures Experts Group), is used for video.
www.smartcomputing.com /editorial/dictionary/detail.asp?guid=8CF5E5CB35CB42E1857F6F42970E2A2C&searchtype=1&DicID=17887&RefType=Encyclopedia   (438 words)

  
  JPEG 2000 - Wikipedia, the free encyclopedia
It was created by the Joint Photographic Experts Group committee with the intention of superseding their original discrete cosine transform-based JPEG standard.
JPEG 2000 is not yet widely supported in web browsers, and hence is not generally used on the World Wide Web.
JPEG 2000 is not widely supported in present software due to the perceived danger of software patents on the mathematics of the compression method, this area of mathematics being heavily patented in general.
www.wikipedia.org /wiki/JPEG_2000   (1761 words)

  
 JPEG - Wikipedia
JPEG is a commonly used standard method of compressing photographic images.
JPEG itself specifies only how an image is transformed into a stream of bytes, but not how those bytes are encapsulated in any particular storage medium.
JPEG is at its best on photographs and paintings of realistic scenes with smooth variations of tone and color.
nostalgia.wikipedia.org /wiki/JPEG   (772 words)

  
 GRAPHICS: JPEG graphics
JPEG images have generated tremendous interest among photographers, artists, graphic designers, medical imaging specialists, art historians, and other groups for whom image quality is paramount and where color fidelity cannot be compromised by dithering a graphic to 8-bit color.
JPEG compression uses a sophisticated mathematical technique called a discrete cosine transformation to produce a sliding scale of graphics compression.
This is possible because the JPEG algorithm discards "unnecessary" data as it compresses the image, and it is thus called a "lossy" compression technique.
www.webstyleguide.com /graphics/jpegs.html   (483 words)

  
 JPEG   (Site not responding. Last check: 2007-10-27)
The JPEG committee has now created its own wavelet-based standard, JPEG 2000, which is intended to eventually supersede the original JPEG standard.
The JPEG committee investigated the patent claims in 2002 and found that they were invalidated by prior art.
The JPEG committee has as one of its explicit goals that their standards be implementable without payment of license fees, and they have secured appropriate license rights for their upcoming JPEG 2000 standard from over 20 large organizations.
www.sciencedaily.com /encyclopedia/jpeg   (1099 words)

  
 JPEG JFIF
JPEG (Joint Photographic Experts Group) is a lossy compression method standardised by ISO.
JPEG JFIF, which is what people generally mean when they refer to "JPEG", is a file format created by the Independent JPEG Group (IJG) for the transport of single JPEG-compressed images.
Progressive JPEG is a means of reordering the information so that, after only a small part has been downloaded, a hazy view of the entire image is presented rather than a crisp view of just a small part.
www.w3.org /Graphics/JPEG   (353 words)

  
 JPEG : Joint Photographic Experts Group   (Site not responding. Last check: 2007-10-27)
However, JPEG is a well established standard with plenty of software available, including free software, so it continues to be heavily used as of 2003.
It has always been a strong goal of the JPEG committee that its standards should be implementable in their baseline form without payment of royalty and license fees, and the committee would like to record their disappointment that some organisations appear to be working in conflict with this goal.
The up and coming JPEG 2000 standard has been prepared along these lines, and agreement reached with over 20 large organisations holding many patents in this area to allow use of their intellectual property in connection with the standard without payment of license fees or royalties.
www.termsdefined.net /jo/joint-photographic-experts-group.html   (1263 words)

  
 JOINT PHOTOGRAPHIC EXPERTS GROUP - Definition   (Site not responding. Last check: 2007-10-27)
(JPEG) The original name of the committee that designed the standard image compression algorithm.
JPEG is designed for compressing either full-colour or grey-scale digital images of "natural", real-world scenes.
JPEG does not handle compression of fl-and-white (1 bit-per-pixel) images or moving pictures.
www.hyperdictionary.com /dictionary/Joint+Photographic+Experts+Group   (75 words)

  
 What are JPEG & .JPG? Joint Photographic Experts Group image   (Site not responding. Last check: 2007-10-27)
JPEG (Joint Photographic Experts Group) is a very efficient, true-color, compressed image format.
JPEG supports a concept similar to interlacing in GIF which is called progressive JPEG.
Unfortunately, progressive JPEG is a relatively new standard and is not supported by all browsers.
bugclub.org /beginners/imaging/jpeg.html   (262 words)

  
 Smart Computing Encyclopedia Entry - Moving-Joint Photographic Experts Group (M-JPEG)
M-JPEG does not use interframe coding, the encoding of a frame by predicting its elements from elements of the previous frame, as MPEG (Moving Picture Experts Group) does.
Viewing requires a machine that can decompress and display each JPEG image quickly enough to sustain the required frame rate of the picture sequence.
JPEG compression chips are available that are designed to work at television frame rates and resolutions.
www.smartcomputing.com /editorial/dictionary/detail.asp?searchtype=2&DicID=18248&RefType=Encyclopedia&guid=8CF5E5CB35CB42E1857F6F42970E2A2C   (262 words)

  
 [No title]
JPEG 2000 is a new standard, intended to create a image coding system for many types of still images (bi-level, gray-level, color, multi- component) with different characteristics (natural images, scientific, medical, remote sensing, imagery, text, rendered graphics, etc.) allowing different imaging models (client/server, real-time transmission, image library archival, limited buffer and Singer, et al.
JPEG 2000 Scope JPEG 2000 is used to compress image data that typically comes from digital cameras, scanners, frame grabbers, complex image capture devices such as medical or satellite systems, and paint- and photo- retouching programs.
JPEG 2000 has an extensible structure, so that it is theoretically possible that metadata fields could be defined in the future which could be used to induce particular actions on the part of the recipient, thus presenting additional security risks, but this type of capability is currently not supported in the referenced JPEG 2000 specification.
www.rfc-editor.org /rfc/rfc3745.txt   (2540 words)

  
 JOINT PHOTOGRAPHIC EXPERTS GROUP
(JPEG) The original name of the committee that designed the standard image compression algorithm.
JPEG is designed for compressing either full-colour or grey-scale digital images of "natural", real-world scenes.
JPEG does not handle compression of fl-and-white (1 bit-per-pixel) images or moving pictures.
www.websters-online-dictionary.org /Jo/Joint+Photographic+Experts+Group.html   (237 words)

  
 GIFs and JPEGs
The two main Internet graphics formats, GIF and JPEG, have such compression built in, but there are major differences between the two, as we shall see.
Side note: although GIF and JPEG are dominant there are other Web graphics formats, such as PNG or Lightning Strike compressed images.
JPEG, on the other hand, is a lossy compression method.
www.widearea.co.uk /designer/compress.html   (586 words)

  
 The JPEG file type   (Site not responding. Last check: 2007-10-27)
The JPEG file type is a compressed, transportable file that is quickly becoming the file format standard for digital cameras and high-quality images on the World Wide Web.
JPEG, which stands for Joint Photographic Experts Group, compresses a file by discarding information that may not be visible to the human eye.
JPEG also allows for the inclusion of color profiles to be embedded and read by other applications.
classes.grc.calpoly.edu /202/Capture/Nikon/fileTypeJPEG.htm   (175 words)

  
 About JPEG
JPEG stands for 'Joint Photographic Experts Group', and JBIG for 'Joint Bi-level Image experts Group' - the term 'Joint' refers to the link between the standardisation bodies that created these working groups, ISO and ITU-T.
It also holds links to a JPEG public relations site, and one dealing with the registration of information and other data in accordance with standards produced by the groups.
To participate in the work of the JPEG and JBIG committees, or to have access to all the information the site contains about new initiatives such as JPEG 2000, you must be a member of the committee, or of a body which has 'liaison' status with us.
www.jpeg.org /committee.html   (263 words)

  
 WDVL: Graphics Formats for the WWW: JPEG
The JPEG (Joint Photographic Experts Group) standard is excellent for most realistic images (photos for example, but not line drawings or logos).
JPEG is best suited for truecolor original images; avoid using it on images that have already been forced into a 256-color palette.
This is distinct from a JPEG compressed PICT file, which is often referred to as 'a JPEG file' on the Macintosh platform.
wdvl.internet.com /Graphics/Formats/JPEG.html   (353 words)

  
 JPEG - a Whatis.com definition - see also: JPG, Joint Photographic Experts Group   (Site not responding. Last check: 2007-10-27)
1) JPEG (Joint Photographic Experts Group) is an ISO/IEC group of experts that develops and maintains standards for a suite of compression algorithms for computer image files.
A JPEG file is created by choosing from a range of compression qualities (actually, from one of a suite of compression algorithms).
When you create a JPEG or convert an image from another format to a JPEG, you are asked to specify the quality of image you want.
whatis.techtarget.com /definition/0,289893,sid9_gci212425,00.html   (278 words)

  
 JPEG (Joint Photographic Experts Group)   (Site not responding. Last check: 2007-10-27)
Jpeg format was designed to transfer graphic data and images via digital telecommunication networking and was generally used to hold and transfer full color photorealistic images.
It is not possible to refine Jpeg images, though it is possible to debase them by decreasing the file size.
Jpeg format is primarily used to hold photorealistic graphic images with a large number of colors.
www.image-formats.com /jpeg.htm   (218 words)

  
 NEWS! - Forgent JPEG claims: groundless?   (Site not responding. Last check: 2007-10-27)
The 'Joint Photographic Experts Group' (JPEG) has posted a news release on its site stating that it feels the portions of Forgent's patent affecting JPEG may well be invalid.
According to the JPEG's committee, after a brief examination of Forgent's patent it feels that prior art does exist for the portions which are related to the compression technology used in JPEG.
As a response to this, the JPEG committee will be collecting, through its new web site (to be launched shortly) a substantial repository of prior art and it invites submissions, particularly where the content may be applied to claims of intellectual property.
www.imaging-resource.com /NEWS/1027356957.html   (943 words)

  
 SITO compression page
JPEG is "lossy," meaning that the decompressed image isn't quite the same as the one you started with.
JPEG is *not* going to displace GIF entirely; for some types of images, GIF is superior in image quality, file size, or both.
When a JPEG file is made from full-color data, using a quality setting just high enough to prevent visible loss, the JPEG will typically be a factor of four or five smaller than a GIF file made from the same data.
www.ibiblio.org /otis/notes/otis-compression.html   (2313 words)

  
 Joint Photographic Experts Group   (Site not responding. Last check: 2007-10-27)
JPEG does not work very well when compressing text, line art, or vector graphics.
JPEG uses lossy compression methods that result in some loss of the original data.
JPEG can store 24-bit color images in as many as 16 million colors; files in Graphics Interchange Format (GIF) form can only store 256 colors.
www.coffeycountyks.org /Terms/2461HTML-1480.html   (110 words)

  
 Glossary Search Results   (Site not responding. Last check: 2007-10-27)
It was created in 1958 to form discrete semiconductor device standards, and was expanded to include integrated circuits in 1970.
However, smaller joysticks that can be pushed around with a single finger have been added to some of the pads as well.
JPG - This is the common file extension for a JPEG file.
www.geek.com /glossary/glossary_search.cgi?j   (1231 words)

  
 JPEG image compression FAQ, part 1/2   (Site not responding. Last check: 2007-10-27)
Edges this sharp are rare in scanned photographs, but are fairly common in GIF files: consider borders, overlaid text, etc. The blurriness is particularly objectionable with text that's only a few pixels high.
When a JPEG file is made from full-color photographic data, using a quality setting just high enough to prevent visible loss, the JPEG will typically be a factor of four or five smaller than a GIF file made from the same data.
JPEGs can be classified as color or gray-scale, but number of colors just isn't a useful concept for JPEG, any more than it is for a real photograph.
www.faqs.org /faqs/jpeg-faq/part1   (9116 words)

  
 Australian Archaeological Association   (Site not responding. Last check: 2007-10-27)
Many of these boards are run by and for literalist Christian groups and can be decidedly unfriendly but one moderated board at www.carm.org/boards.htm has a more amicable feel.
The results of this study may be used by archaeologists to infer archaeological residues deriving from cooked starchy foods and thus identify cooking as a specific form of activity in past subsistence behaviour.
Lastly, the process of realisation and reflection is the basis for archaeologists to engage with antiquarians in meaningful dialogue and co-operation.
australianarchaeologicalassociation.com.au /postergallery/index.php   (4559 words)

  
 JPEG ( Joint Photographic Experts Group, Photography Experts Group, and Joint Photography Experts Group) Definition
JPEG (Joint Photographic Experts Group, Photography Experts Group, and Joint Photography Experts Group) Definition
When you create a JPEG or convert an image from another format to a JPEG, you are asked to specify the quality of image you want.
The JPEG scheme includes 29 distinct coding processes although a JPEG implementor may not use them all.
www.bitpipe.com /tlist/JPEG.html   (283 words)

  
 Joint Photographic Experts Group   (Site not responding. Last check: 2007-10-27)
Organization of companies that develops international standards for compression of digital photographic images.
The JPEG standard uses a one-pass, threefold process to compress images.
The JPEG algorithm reduces image size by as much as 65:1 while maintaining image integrity by eliminating imperceptible color information.
www.olle.com /Demo/ztl.html   (58 words)

  
 Light eBusiness glossary English French I to Z   (Site not responding. Last check: 2007-10-27)
JPEG is the second most used format for Web usage.
JPEG, Joint Photographic Experts Group, is a compressed format standard for fixed images.
Though more than one definition co-exists, virtual enterprise is used for a group, built from more than one team and / or more than one distant organizations or individuals, co-operating through the information and communication technology.
www.iskiv.net /glo/glossar2.html   (1281 words)

  
 INFO: Determine the JPEG Quality Factor by Using Visual Basic .NET
Compression in a Joint Photographic Experts Group (JPEG) file is controlled by a set of quantization tables.
The JPEG quality factor is used to generate a pair of quantization tables.
Many applications that are based on the Independent JPEG Group (IJG) code generate the same quantization tables as the IJG reference code.
support.microsoft.com /default.aspx?scid=kb;EN-US;Q324788   (492 words)

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