JPEG 2000

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|subcat=Graphics
 
|subcat=Graphics
 
|thiscat=JPEG2000
 
|thiscat=JPEG2000
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|extensions={{ext|jp2}} {{ext|jpx}} {{ext|jpf}} {{ext|jpm}} {{ext|mj2}} {{ext|j2c}}
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|extensions={{ext|jp2}}, {{ext|jpf}}, {{ext|jpm}}, {{ext|mj2}}
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|mimetypes={{mimetype|image/jp2}}<br>{{mimetype|image/jpx}}<br>{{mimetype|image/jpm}}<br>{{mimetype|video/mj2}}
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|mimetypes={{mimetype|image/jp2}}, {{mimetype|image/jpx}}, {{mimetype|image/jpm}}, {{mimetype|video/mj2}}
 
}}
 
}}
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== Overview ==
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'''JPEG2000''' is standard that defines a [[wavelet compression|wavelet-based]] raster image compression format, and a family of associated file formats, protocols, etc.
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'''JPEG2000''' is a wavelet-based image compression standard. The standard includes a number of file formats that are used as containers for compressed image and video data:
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* [[JP2]] [[JPEG2000]] Part 1 (base still image format)  
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For details about specific formats, see:
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* [[JPX]] [[JPEG2000]] Part 2 (extended still image format)
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* [[JPEG2000 codestream]]
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* [[JPM]] [[JPEG2000]] Part 6 (compound image format)
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* [[JP2]] (base still image format)  
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* [[MJ2]] [[JPEG2000]] Part 3 (motion [[JPEG2000]])
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* [[JPX]] (extended still image format)  
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* [[JPEG2000 codestream|J2C]] [[JPEG2000]] codestream (also defined by Part 1)
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* [[JPM]] (compound image format)  
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* [[MJ2]] (motion JPEG2000)  
  
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==Disambiguation==
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== Disambiguation ==
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Colloquially the denomination [[JPEG2000]] is sometimes used to indicate the [[JP2]] format. This is not strictly correct, as [[JPEG2000]] is a ''compression standard'', not a ''format''. It is also confusing, since
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'''JPEG2000''' is sometimes incorrectly used as a synonym for '''JP2'''. Although JP2 might be the most important part of the JPEG2000 standard, it is only one small part of it.
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the [[JPEG2000]] standard comprises multiple file formats.
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In some contexts, '''JPEG2000''' is used to mean the compressed codestream format, instead of the whole standard.
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== Details ==
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The JPEG2000 standard consists of many parts, including:
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* Part 1: Core coding system. Defines [[JPEG2000 codestream]] format and the [[JP2]] file format.
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* Part 2: Extensions. Defines [[JPX]].
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* Part 3: [[MJ2|Motion JPEG 2000 (MJ2)]]
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* Part 6: [[JPM|Compound image file format (JPM)]]
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* Part 8: JPSEC
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* Part 9: JPIP
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* Part 10: JP3D
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* Part 11: JPWL
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* Part 12: ISO Base Media File Format
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== Format ==
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The JPEG2000 file formats (JP2, JPX, JPM, and MJ2, but not the codestream format) use a hierarchical tagged format that is similar to [[RIFF]]. Unlike RIFF, the format supports objects larger than 4GB. It is also somewhat more streamable than RIFF, because it supports objects whose size is implied by the file size instead of reported in advance.
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== Specifications ==
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See also the articles about the specific file formats. Most of the official JPEG2000 specification is not freely available, but the committee drafts are. (Exception: Specifications for the high-level parts of the [[JP2]] and [[JPX]] formats are freely available.)
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* ISO/IEC 15444
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* [http://www.jpeg.org/jpeg2000/CDs15444.html JPEG 2000 Committee Drafts]
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* [http://www.itu.int/rec/T-REC-T.800/en ITU-T Rec.T.800]: JPEG 2000: Core coding system
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* [http://www.itu.int/rec/T-REC-T.801/en ITU-T Rec.T.801]: JPEG 2000: Extensions
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* [http://www.itu.int/rec/T-REC-T.802/en ITU-T Rec.T.802]: JPEG 2000: Motion JPEG 2000
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* [http://www.itu.int/rec/T-REC-T.803/en ITU-T Rec.T.803]: JPEG 2000: Conformance testing
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* [http://www.itu.int/rec/T-REC-T.804/en ITU-T Rec.T.804]: JPEG 2000: Reference software
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* [http://www.itu.int/rec/T-REC-T.805/en ITU-T Rec.T.805]: JPEG 2000: Compound image file format
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* [http://www.itu.int/rec/T-REC-T.807/en ITU-T Rec.T.807]: JPEG 2000: Secure JPEG 2000
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* [http://www.itu.int/rec/T-REC-T.808/en ITU-T Rec.T.808]: JPEG 2000: Interactivity tools, APIs and protocols
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* [http://www.itu.int/rec/T-REC-T.809/en ITU-T Rec.T.809]: JPEG 2000: Extensions for three-dimensional data
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* [http://www.itu.int/rec/T-REC-T.810/en ITU-T Rec.T.810]: JPEG 2000: Wireless
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* [http://www.itu.int/rec/T-REC-T.812/en ITU-T Rec.T.812]: JPEG 2000: An entry level JPEG 2000 encoder
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* [http://www.itu.int/rec/T-REC-T.813/en ITU-T Rec.T.813]: JPEG 2000: XML structural representation and reference
  
 
== Software ==
 
== Software ==
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== Sample files ==
 
== Sample files ==
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* [http://www.opf-labs.org/format-corpus/jp2k-formats/ JPEG 2000 sample images]
 
* [http://www.opf-labs.org/format-corpus/jp2k-formats/ JPEG 2000 sample images]
  
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== References ==
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== Links ==
 
* [http://www.jpeg.org/jpeg2000/ JPEG 2000 standard]
 
* [http://www.jpeg.org/jpeg2000/ JPEG 2000 standard]
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* [[Wikipedia:JPEG 2000]].
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* [[Wikipedia:JPEG 2000]]

Revision as of 00:53, 28 July 2013

File Format
Name JPEG 2000
Ontology
Extension(s) .jp2, .jpf, .jpm, .mj2
MIME Type(s) image/jp2, image/jpx, image/jpm, video/mj2

JPEG2000 is standard that defines a wavelet-based raster image compression format, and a family of associated file formats, protocols, etc.

For details about specific formats, see:

Contents

Disambiguation

JPEG2000 is sometimes incorrectly used as a synonym for JP2. Although JP2 might be the most important part of the JPEG2000 standard, it is only one small part of it.

In some contexts, JPEG2000 is used to mean the compressed codestream format, instead of the whole standard.

Details

The JPEG2000 standard consists of many parts, including:

Format

The JPEG2000 file formats (JP2, JPX, JPM, and MJ2, but not the codestream format) use a hierarchical tagged format that is similar to RIFF. Unlike RIFF, the format supports objects larger than 4GB. It is also somewhat more streamable than RIFF, because it supports objects whose size is implied by the file size instead of reported in advance.

Specifications

See also the articles about the specific file formats. Most of the official JPEG2000 specification is not freely available, but the committee drafts are. (Exception: Specifications for the high-level parts of the JP2 and JPX formats are freely available.)

Software

Sample files

Links

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