JP2

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(Specifications)
(Identification)
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== Identification ==
 
== 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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JP2 files begin with bytes <code>00 00 00 0c 6a 50 20 20 0d 0a 87 0a 6a 70 32 20 66 74 79 70 6a 70 32 20</code>.
  
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.
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Note that some Adobe applications (most notably Adobe Photoshop) produce [[JPX]] (JPEG 2000 Part 2) images that erroneously use the above byte sequence, which makes them (superficially) indistinguishable from JP2 images.
  
 
== Specifications ==
 
== Specifications ==

Revision as of 14:47, 21 October 2013

File Format
Name JP2
Ontology
Extension(s) .jp2
MIME Type(s) image/jp2
LoCFDD fdd000143, others
PRONOM x-fmt/392

JP2 is the baseline image file format defined by the JPEG 2000 standard. It encapsulates a JPEG 2000 codestream.

Contents

Identifiers

Format PRONOM LoCFDD
JP2 x-fmt/392 fdd000143
JP2, Lossless fdd000167
JP2, Lossy fdd000168
JP2, Profile 0 fdd000195
JP2, Profile 1 fdd000197
JP2, Profile 3 fdd000212
JP2, Profile 4 fdd000214
JP2, BIIF Profile fdd000169
JP2, NDNP Profile fdd000193

Identification

JP2 files begin with bytes 00 00 00 0c 6a 50 20 20 0d 0a 87 0a 6a 70 32 20 66 74 79 70 6a 70 32 20.

Note that some Adobe applications (most notably Adobe Photoshop) produce JPX (JPEG 2000 Part 2) images that erroneously use the above byte sequence, which makes them (superficially) indistinguishable from JP2 images.

Specifications

Software

See also JPEG 2000.

  • jpylyzer: JP2 validator and property extractor

GeoJP2

GeoJP2 is an extension of the JP2 format which allows one to include geospatial metadata in georeferenced JP2 images.

Sample files

Links

Personal tools
Namespaces

Variants
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