JPEG XT
From Just Solve the File Format Problem
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* [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=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=66073 ISO/IEC CD 18477-5] - Part 5: Reference software | ||
| − | * [http://www.iso.org/iso/catalogue_detail.htm?csnumber=67168 ISO/IEC | + | * [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 | + | * [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=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 | * [http://www.iso.org/iso/catalogue_detail.htm?csnumber=68664 ISO/IEC DIS 18477-9] - Part 9: Alpha Channel Coding | ||
Revision as of 20:43, 8 April 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 PRF 18477-2 - Part 2: Extensions for high dynamic range images
- ISO/IEC 18477-3:2015 - Part 3: Box file format
- ISO/IEC CD 18477-4 - Part 4: Conformance testing
- ISO/IEC CD 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 DIS 18477-8 - Part 8: Lossless and Near-lossless Coding
- ISO/IEC DIS 18477-9 - Part 9: Alpha Channel Coding
