Sustainability of Digital Formats: Planning for Library of Congress Collections |
|
![]() |
|
Introduction | Sustainability Factors | Content Categories | Format Descriptions | Contact |
Full name | ISO/IEC 15444-1:2004. Information technology -- JPEG 2000 image coding system -- Part 1: Core coding system, file format as specified in Annex I, with lossless encoded bitstream (formal name); JPEG 2000 jp2 file format with lossless data (common name) |
---|---|
Description | JPEG 2000 core (part 1) wrapper containing lossless encoded data. |
Production phase | May be used for content in initial, middle, and final states. |
Relationship to other formats | |
Subtype of | JP2_FF, JPEG 2000 Part 1 (Core) jp2 File Format |
Contains | J2K_C_LL, JPEG 2000 Part 1, Core Coding, Lossless |
LC experience or existing holdings | Video reformatting in the Library's Motion Picture, Broadcasting, and Recorded Sound Division employs individual frame images with lossless compression; these are, however, codestreams and not in the JPEG 2000 wrapper. At this writing (January 2012), there are plans to study the applicability of both lossless and lossy JPEG 2000 as master images (in the JPEG 2000 wrapper) for still-image-based reformatting projects. |
---|---|
LC preference | None established. |
Disclosure | See JP2_FF and J2K_C |
---|---|
Documentation | See JP2_FF and J2K_C |
Adoption | See JP2_FF |
Licensing and patents | See JP2_FF and J2K_C |
Transparency | See J2K_C |
Self-documentation | See JP2_FF |
External dependencies | See JP2_FF and J2K_C |
Technical protection considerations | See JP2_FF |
Still Image | |
---|---|
Normal rendering | Good support. |
Clarity (high image resolution) | See J2K_C |
Color maintenance | See JP2_FF and J2K_C |
Support for vector graphics, including graphic effects and typography | See JP2_FF |
Support for multispectral bands | See JP2_FF |
Functionality beyond normal rendering | See JP2_FF and J2K_C |
Tag | Value | Note |
---|---|---|
Filename extension | See related format. |
See JP2_FF |
Internet Media Type | See related format. |
See JP2_FF |
Magic numbers | See related format. |
See JP2_FF |
File type brand (ISO Base Media File Format) | See related format. |
See JP2_FF |
Uniform Type Identifier (Mac OS) | See related format. |
See JP2_FF |
General | |
---|---|
History |
|