JPEG XT - Revision history

Jsummers: /* Identification */

2023-12-01T18:30:32Z

‎Identification

Jsummers: Category:JPEG (organization)

2019-10-15T22:21:17Z

Category:JPEG (organization)

Jsummers: Category:Box file format

2018-04-11T13:43:03Z

Category:Box file format

Jsummers: /* Specifications */

2018-04-02T15:10:33Z

‎Specifications

Jsummers at 13:17, 2 April 2018

2018-04-02T13:17:37Z

Jsummers: /* Specifications */ Updated links

2017-12-16T15:26:25Z

‎Specifications: Updated links

Jsummers at 15:22, 16 December 2017

2017-12-16T15:22:36Z

Jsummers at 12:38, 5 December 2016

2016-12-05T12:38:33Z

Jsummers: /* Specifications */

2016-09-30T14:00:40Z

‎Specifications

Jsummers: /* Specifications */

2016-04-08T20:43:04Z

‎Specifications

@@ Line 14: / Line 14: @@
 == Identification ==
-A JPEG XT file contains one or more APP11 segments (see [[JPEG#Application segments]]) whose data begins with ASCII "{{magic|JP}}". Note that the signature is just these two bytes, and has no NUL terminator.
+A JPEG XT file contains one or more APP11 segments (see [[JPEG#Application segments]]) whose data begins with ASCII "{{magic|JP}}".
 == Specifications ==

@@ Line 36: / Line 36: @@
 * [http://www.jpeg.org/jpegxt/index.html Overview of JPEG XT]
 [[Category:JPEG]]
 [[Category:Box file format]]

← Older revision		Revision as of 13:43, 11 April 2018
Line 37:		Line 37:

	[[Category:JPEG]]		[[Category:JPEG]]
		+	[[Category:Box file format]]

@@ Line 17: / Line 17: @@
 == Specifications ==
-''The documents listed here are not necessarily available yet, and if they are, they're probably not free to download.''
+''Most of these documents are not free to download.''
 * [https://www.iso.org/standard/62552.html ISO/IEC 18477-1:2015] - Part 1: Scalable compression and coding of continuous-tone still images
 ** [https://webstore.iec.ch/preview/info_isoiec18477-1%7Bed1.0%7Den.pdf ISO/IEC 18477-1 preview]

@@ Line 8: / Line 8: @@
 JPEG XT is similar in concept to [[JPEG-HDR]]. Its precise relationship to JPEG-HDR is not clear; the formats do not appear to be compatible.
-All the critical parts of the standard were published as of 2016-10-15.
+All the critical parts of the standard were published as of 2016-10-15. The final part of the original standard was published in 2018-03.
 == Format details ==
@@ Line 23: / Line 23: @@
 * [https://www.iso.org/standard/66071.html ISO/IEC 18477-3:2015] - Part 3: Box file format
 * [https://www.iso.org/standard/66072.html ISO/IEC 18477-4:2017] - Part 4: Conformance testing
-* [https://www.iso.org/standard/66073.html ISO/IEC 18477-5] - Part 5: Reference software
+* [https://www.iso.org/standard/66073.html ISO/IEC 18477-5:2018] - Part 5: Reference software
 * [https://www.iso.org/standard/67168.html ISO/IEC 18477-6:2016] - Part 6: IDR Integer Coding
 * [https://www.iso.org/standard/67169.html ISO/IEC 18477-7:2016] - Part 7: HDR Floating-Point Coding

@@ Line 18: / Line 18: @@
 == Specifications ==
 ''The documents listed here are not necessarily available yet, and if they are, they're probably not free to download.''
-* [http://www.iso.org/iso/catalogue_detail.htm?csnumber=62552 ISO/IEC 18477-1:2015] - Part 1: Scalable compression and coding of continuous-tone still images
+* [https://www.iso.org/standard/62552.html ISO/IEC 18477-1:2015] - Part 1: Scalable compression and coding of continuous-tone still images
 ** [https://webstore.iec.ch/preview/info_isoiec18477-1%7Bed1.0%7Den.pdf ISO/IEC 18477-1 preview]
-* [http://www.iso.org/iso/catalogue_detail.htm?csnumber=66070 ISO/IEC 18477-2:2016] - Part 2: Extensions for high dynamic range images
+* [https://www.iso.org/standard/66070.html ISO/IEC 18477-2:2016] - Part 2: Extensions for high dynamic range images
-* [http://www.iso.org/iso/catalogue_detail.htm?csnumber=66071 ISO/IEC 18477-3:2015] - Part 3: Box file format
+* [https://www.iso.org/standard/66071.html ISO/IEC 18477-3:2015] - Part 3: Box file format
-* [http://www.iso.org/iso/catalogue_detail.htm?csnumber=66072 ISO/IEC 18477-4] - Part 4: Conformance testing
+* [https://www.iso.org/standard/66072.html ISO/IEC 18477-4:2017] - Part 4: Conformance testing
-* [http://www.iso.org/iso/catalogue_detail.htm?csnumber=66073 ISO/IEC 18477-5] - Part 5: Reference software
+* [https://www.iso.org/standard/66073.html ISO/IEC 18477-5] - Part 5: Reference software
-* [http://www.iso.org/iso/catalogue_detail.htm?csnumber=67168 ISO/IEC 18477-6:2016] - Part 6: IDR Integer Coding
+* [https://www.iso.org/standard/67168.html ISO/IEC 18477-6:2016] - Part 6: IDR Integer Coding
-* [http://www.iso.org/iso/catalogue_detail.htm?csnumber=67169 ISO/IEC 18477-7:2016] - Part 7: HDR Floating-Point Coding
+* [https://www.iso.org/standard/67169.html ISO/IEC 18477-7:2016] - Part 7: HDR Floating-Point Coding
-* [http://www.iso.org/iso/catalogue_detail.htm?csnumber=68663 ISO/IEC 18477-8:2016] - Part 8: Lossless and Near-lossless Coding
+* [https://www.iso.org/standard/68663.html ISO/IEC 18477-8:2016] - Part 8: Lossless and Near-lossless Coding
-* [http://www.iso.org/iso/catalogue_detail.htm?csnumber=68664 ISO/IEC 18477-9:2016] - Part 9: Alpha Channel Coding
+* [https://www.iso.org/standard/68664.html ISO/IEC 18477-9:2016] - Part 9: Alpha Channel Coding
 == Software ==

@@ Line 11: / Line 11: @@
 == Format details ==
-Like [[JPEG-HDR]], it uses APP11 segments. Unlike JPEG-HDR, the data in those segments apparently uses [[boxes/atoms format]], with the brand "<code>jpxt</code>".
+Like [[JPEG-HDR]], it uses APP11 segments. Unlike JPEG-HDR, the data in those segments uses [[boxes/atoms format]], with the brand "<code>jpxt</code>".
 == Specifications ==

@@ Line 2: / Line 2: @@
 |formattype=electronic
 |subcat=Graphics
 }}
 [[JPEG XT]] is a backward-compatible extension of the [[JPEG]] graphics format. It offers higher bit depths, high dynamic range, lossless and near-lossless compression, and transparency.
-JPEG XT is similar in concept to [[JPEG-HDR]]. Its precise relationship to JPEG-HDR is not clear; the formats appear to be mutually incompatible.
+JPEG XT is similar in concept to [[JPEG-HDR]]. Its precise relationship to JPEG-HDR is not clear; the formats do not appear to be compatible.
-As of 2016-01 it is still in development, though some parts of the standard have been published.
+All the critical parts of the standard were published as of 2016-10-15.
 == Format details ==
@@ Line 22: / Line 23: @@
 * [http://www.iso.org/iso/catalogue_detail.htm?csnumber=67168 ISO/IEC 18477-6:2016] - Part 6: IDR Integer Coding
 * [http://www.iso.org/iso/catalogue_detail.htm?csnumber=67169 ISO/IEC 18477-7:2016] - Part 7: HDR Floating-Point Coding
-* [http://www.iso.org/iso/catalogue_detail.htm?csnumber=68663 ISO/IEC 18477-8] - Part 8: Lossless and Near-lossless Coding
+* [http://www.iso.org/iso/catalogue_detail.htm?csnumber=68663 ISO/IEC 18477-8:2016] - Part 8: Lossless and Near-lossless Coding
-* [http://www.iso.org/iso/catalogue_detail.htm?csnumber=68664 ISO/IEC 18477-9] - Part 9: Alpha Channel Coding
+* [http://www.iso.org/iso/catalogue_detail.htm?csnumber=68664 ISO/IEC 18477-9:2016] - Part 9: Alpha Channel Coding
 == Software ==

@@ Line 20: / Line 20: @@
 * [http://www.iso.org/iso/catalogue_detail.htm?csnumber=66072 ISO/IEC CD 18477-4] - Part 4: Conformance testing
 * [http://www.iso.org/iso/catalogue_detail.htm?csnumber=66073 ISO/IEC CD 18477-5] - Part 5: Reference software
-* [http://www.iso.org/iso/catalogue_detail.htm?csnumber=67168 ISO/IEC FDIS 18477-6] - Part 6: IDR Integer Coding
+* [http://www.iso.org/iso/catalogue_detail.htm?csnumber=67168 ISO/IEC 18477-6:2016] - Part 6: IDR Integer Coding
-* [http://www.iso.org/iso/catalogue_detail.htm?csnumber=67169 ISO/IEC FDIS 18477-7] - Part 7: HDR Floating-Point Coding
+* [http://www.iso.org/iso/catalogue_detail.htm?csnumber=67169 ISO/IEC 18477-7:2016] - Part 7: HDR Floating-Point Coding
 * [http://www.iso.org/iso/catalogue_detail.htm?csnumber=68663 ISO/IEC DIS 18477-8] - Part 8: Lossless and Near-lossless Coding
 * [http://www.iso.org/iso/catalogue_detail.htm?csnumber=68664 ISO/IEC DIS 18477-9] - Part 9: Alpha Channel Coding