JPEG XT
From Just Solve the File Format Problem
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* [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 | * [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://webstore.iec.ch/preview/info_isoiec18477-1%7Bed1.0%7Den.pdf ISO/IEC 18477-1 preview] | ** [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 | + | * [http://www.iso.org/iso/catalogue_detail.htm?csnumber=66070 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 | * [http://www.iso.org/iso/catalogue_detail.htm?csnumber=66071 ISO/IEC 18477-3:2015] - Part 3: Box file format | ||
| − | * [http://www.iso.org/iso/catalogue_detail.htm?csnumber=66072 ISO/IEC | + | * [http://www.iso.org/iso/catalogue_detail.htm?csnumber=66072 ISO/IEC 18477-4] - Part 4: Conformance testing |
| − | * [http://www.iso.org/iso/catalogue_detail.htm?csnumber=66073 ISO/IEC | + | * [http://www.iso.org/iso/catalogue_detail.htm?csnumber=66073 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 | * [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=67169 ISO/IEC 18477-7:2016] - Part 7: HDR Floating-Point Coding | ||
| − | * [http://www.iso.org/iso/catalogue_detail.htm?csnumber=68663 ISO/IEC | + | * [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=68664 ISO/IEC | + | * [http://www.iso.org/iso/catalogue_detail.htm?csnumber=68664 ISO/IEC 18477-9] - Part 9: Alpha Channel Coding |
== Software == | == Software == | ||
Revision as of 14:00, 30 September 2016
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.
As of 2016-01 it is still in development, though some parts of the standard have been published.
Contents |
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 "jpxt".
Specifications
The documents listed here are not necessarily available yet, and if they are, they're probably not free to download.
- ISO/IEC 18477-1:2015 - Part 1: Scalable compression and coding of continuous-tone still images
- ISO/IEC 18477-2:2016 - Part 2: Extensions for high dynamic range images
- ISO/IEC 18477-3:2015 - Part 3: Box file format
- ISO/IEC 18477-4 - Part 4: Conformance testing
- ISO/IEC 18477-5 - Part 5: Reference software
- ISO/IEC 18477-6:2016 - Part 6: IDR Integer Coding
- ISO/IEC 18477-7:2016 - Part 7: HDR Floating-Point Coding
- ISO/IEC 18477-8 - Part 8: Lossless and Near-lossless Coding
- ISO/IEC 18477-9 - Part 9: Alpha Channel Coding
