JP2
From Just Solve the File Format Problem
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| − | + | JP2 is the baseline image file format defined by the [[JPEG2000]] standard. It encapsulates a [[JPEG2000 codestream]]. | |
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| + | == Identification == | ||
| + | JP2 files begin with bytes <code>00 00 00 0c 6a 50 20 20 0d 0a 87 0a ?? ?? ?? ?? 66 74 79 70 6a 70 32 20</code>. | ||
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| + | However, if four bytes at offset 20 are not as shown above ("<code>jp2 </code>"), a JP2 decoder is still expected to decode the file if "<code>jp2 </code>" appears in the list beginning at byte offset 28. | ||
== See also == | == See also == | ||
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== Specifications == | == Specifications == | ||
| − | + | * [http://www.jpeg.org/public/15444-1annexi.pdf ISO/IEC 15444-1 Annex I: JP2 file format syntax] | |
| − | * [http://www.jpeg.org/public/15444-1annexi.pdf JP2 file format syntax] | + | * ISO/IEC 15444-1 |
| + | * [http://www.itu.int/rec/T-REC-T.800/en ITU-T Rec. T.800] (not free to download) | ||
| + | * [http://www.jpeg.org/jpeg2000/CDs15444.html JPEG 2000 Committee Drafts] | ||
== Sample images == | == Sample images == | ||
| − | |||
* [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] | ||
| − | == | + | == Links == |
| − | + | ||
* [[Wikipedia:JPEG 2000]] | * [[Wikipedia:JPEG 2000]] | ||
* [http://blogs.loc.gov/digitalpreservation/2013/01/is-jpeg-2000-a-preservation-risk/ Is JPEG-2000 a Preservation Risk?] | * [http://blogs.loc.gov/digitalpreservation/2013/01/is-jpeg-2000-a-preservation-risk/ Is JPEG-2000 a Preservation Risk?] | ||
Revision as of 01:29, 27 July 2013
JP2 is the baseline image file format defined by the JPEG2000 standard. It encapsulates a JPEG2000 codestream.
Contents |
Identification
JP2 files begin with bytes 00 00 00 0c 6a 50 20 20 0d 0a 87 0a ?? ?? ?? ?? 66 74 79 70 6a 70 32 20.
However, if four bytes at offset 20 are not as shown above ("jp2 "), a JP2 decoder is still expected to decode the file if "jp2 " appears in the list beginning at byte offset 28.
See also
Specifications
- ISO/IEC 15444-1 Annex I: JP2 file format syntax
- ISO/IEC 15444-1
- ITU-T Rec. T.800 (not free to download)
- JPEG 2000 Committee Drafts
