JP2 - Revision history

Jsummers at 17:27, 16 October 2019

2019-10-16T17:27:29Z

2019-08-19T12:24:06Z

‎Sample files: Added openjeg-data, updated links to OPF data sets

2018-04-11T13:38:22Z

Category:Box file format

2016-09-02T18:27:40Z

‎Identification

2016-02-22T14:24:23Z

2016-01-07T17:06:00Z

‎Links

2015-09-15T12:20:20Z

‎Links

2015-05-15T12:34:04Z

‎Software

2015-04-09T12:28:40Z

‎Software

2015-03-27T12:01:55Z

‎Links

@@ Line 59: / Line 59: @@
 == Sample files ==
-* [https://github.com/openplanets/format-corpus/tree/master/jp2k-test Jp2k test corpus] - annotated set of images, primarily intended to demonstrate specific preservation risks
+* [https://github.com/openpreserve/format-corpus/tree/master/jp2k-test Jp2k test corpus] - annotated set of images, primarily intended to demonstrate specific preservation risks
-* [https://github.com/openplanets/jpylyzer-test-files Jpylyzer test files] - annotated set of images, primarily intended as test dataset in support of jpylyzer development. Includes many (deliberately) corrupted files.
+* [https://github.com/openpreserve/jpylyzer-test-files Jpylyzer test files] - annotated set of images, primarily intended as test dataset in support of jpylyzer development. Includes many (deliberately) corrupted files.
-* [https://github.com/openplanets/format-corpus/tree/master/jp2k-formats JPEG 2000 sample images] - sample files for each format in the JPEG 2000 format family
+* [https://github.com/openpreserve/format-corpus/tree/master/jp2k-formats JPEG 2000 sample images] - sample files for each format in the JPEG 2000 format family
 == Related formats ==

← Older revision		Revision as of 13:38, 11 April 2018
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	* [https://groups.google.com/forum/#!topic/openjpeg/X0wun3QwIoY Catching and potentially reporting apparent compressed bitstream errors]		* [https://groups.google.com/forum/#!topic/openjpeg/X0wun3QwIoY Catching and potentially reporting apparent compressed bitstream errors]
	* [http://blog.hexagongeospatial.com/jpeg2000-quirks/ JPEG2000 Is Slow … Or Is It?]		* [http://blog.hexagongeospatial.com/jpeg2000-quirks/ JPEG2000 Is Slow … Or Is It?]
		+
		+	[[Category:Box file format]]

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 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>.
-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.
+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 ==

@@ Line 51: / Line 51: @@
 == Software ==
 See also [[JPEG 2000#Software|JPEG 2000]].
 * [http://jpylyzer.openpreservation.org/ Jpylyzer]: JP2 validator and property extractor
 Note also that the [http://jpylyzer.openpreservation.org/userManual.html jpylyzer manual] includes a detailed breakdown of the JP2 format structure.

← Older revision		Revision as of 17:06, 7 January 2016
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	* [http://wiki.dpconline.org/images/4/4b/JP2_Assessment_v1.2_external.pdf JP2 Format Preservation Assessment (British Library)]		* [http://wiki.dpconline.org/images/4/4b/JP2_Assessment_v1.2_external.pdf JP2 Format Preservation Assessment (British Library)]
	* [https://groups.google.com/forum/#!topic/openjpeg/X0wun3QwIoY Catching and potentially reporting apparent compressed bitstream errors]		* [https://groups.google.com/forum/#!topic/openjpeg/X0wun3QwIoY Catching and potentially reporting apparent compressed bitstream errors]
		+	* [http://blog.hexagongeospatial.com/jpeg2000-quirks/ JPEG2000 Is Slow … Or Is It?]

← Older revision		Revision as of 12:20, 15 September 2015
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	* [http://xooyoozoo.github.io/yolo-octo-bugfixes/ Online demonstrator]- shows quality differences between similarly-sized images in [[JPEG]], [[JP2]], [[WebP]] and [[BPG]] formats		* [http://xooyoozoo.github.io/yolo-octo-bugfixes/ Online demonstrator]- shows quality differences between similarly-sized images in [[JPEG]], [[JP2]], [[WebP]] and [[BPG]] formats
	* [http://wiki.dpconline.org/images/4/4b/JP2_Assessment_v1.2_external.pdf JP2 Format Preservation Assessment (British Library)]		* [http://wiki.dpconline.org/images/4/4b/JP2_Assessment_v1.2_external.pdf JP2 Format Preservation Assessment (British Library)]
		+	* [https://groups.google.com/forum/#!topic/openjpeg/X0wun3QwIoY Catching and potentially reporting apparent compressed bitstream errors]

← Older revision		Revision as of 12:01, 27 March 2015
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	* [http://wiki.opf-labs.org/display/JP2/Example+JP2+profiles Example JP2 profiles] (types of JP2s used by different institutions)		* [http://wiki.opf-labs.org/display/JP2/Example+JP2+profiles Example JP2 profiles] (types of JP2s used by different institutions)
	* [http://xooyoozoo.github.io/yolo-octo-bugfixes/ Online demonstrator]- shows quality differences between similarly-sized images in [[JPEG]], [[JP2]], [[WebP]] and [[BPG]] formats		* [http://xooyoozoo.github.io/yolo-octo-bugfixes/ Online demonstrator]- shows quality differences between similarly-sized images in [[JPEG]], [[JP2]], [[WebP]] and [[BPG]] formats
		+	* [http://wiki.dpconline.org/images/4/4b/JP2_Assessment_v1.2_external.pdf JP2 Format Preservation Assessment (British Library)]