# ISO/IEC 21122-1:2019 — Withdrawn and superseded ISO standards

For ISO/IEC 21122-1:2019, item title is Information technology — JPEG XS low-latency lightweight image coding system — Part 1: Core coding system; status code is 9599; successor is ISO/IEC 21122-1:2022; withdrawn / published date is 2019-05-02, recorded from its source on 2026-08-05.

- **Identifier:** ISO/IEC 21122-1:2019 _(verified: appears in the quote below)_
- **Item title:** Information technology — JPEG XS low-latency lightweight image coding system — Part 1: Core coding system _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO/IEC 21122-1:2022
- **Withdrawn / published date:** 2019-05-02 _(verified: appears in the quote below)_

## What the source says

> 74535,IS,,ISO/IEC 21122-1:2019,Information technology — JPEG XS low-latency lightweight image coding system — Part 1: Core coding system,Titre manque — Partie 1: Titre manque,2019-05-02,1,['35.040.40'],ISO/IEC JTC 1/SC 29,9599,,[81551],['en'],70,"<p>This document defines a syntax (and an accompanying decompression process) that is capable to represent continuous-tone grey-scale, or continuous-tone colour digital images without visual loss at moderate compression rates. Typical compression rates are between 2:1 and 6:1 but can also be higher depending on the nature of the image. In particular, the syntax and the decoding process specified in this document allow lightweight encoder and decoder

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).