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Profile 0 for JPEG 2000, Part 1, Core Coding

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Format Description Properties Explanation of format description terms

Identification and description Explanation of format description terms

Full name ISO/IEC 15444-1:2000. Information technology -- JPEG 2000 image coding system -- Part 1: Core coding system, Amendment 1, Codestream Restrictions (2002), Profile 0 (formal name); JPEG 2000 Profile 0 (common name)
Description

Implementation of JPEG 2000 Core Coding (Part 1) that constrains the use of variables in the specification ("restricts the codestream") to serve low-complexity applications, e.g., cell phones and other mobile devices. One key restriction limits image tiles to 128 pixels in each dimension; another limit (shared with profile 1) requires that the low resolution element in the image (LLD; the "D" is a subscript) also be 128 pixels in each dimension, facilitating the rapid construction of a thumbnail by most decompressors.

Additional general information about JPEG 2000 profiles is provided in J2K_C Notes.

Production phase See J2K_C
Relationship to other formats
    Subtype of J2K_C, JPEG 2000 Part 1, Core Coding System
    Used by JP2_J2K_C_Profile_0, JP2 File with JPEG 2000 Core Coding, Profile 0

Local use Explanation of format description terms

LC experience or existing holdings See J2K_C
LC preference See J2K_C

Sustainability factors Explanation of format description terms

Disclosure Open standard. See J2K_C
    Documentation ISO/IEC 15444-1:2000. Information technology -- JPEG 2000 image coding system -- Part 1: Core coding system, Amendment 1, Codestream Restrictions (2002)
Adoption The compiler of this document has not found information that characterizes the extent of adoption of J2K_C_Profile_0; Comments welcome.
    Licensing and patents See J2K_C
Transparency See J2K_C
Self-documentation See JP2_FF
External dependencies See J2K_C
Technical protection considerations See JP2_FF

Quality and functionality factors Explanation of format description terms

Still Image
Normal rendering See J2K_C
Clarity (high image resolution) See J2K_C. It is possible that some of the profile 0 constraints would limit clarity; Comments welcome.
Color maintenance See J2K_C
Support for vector graphics, including graphic effects and typography See JP2_FF
Support for multispectral bands Not relevant for this profile.
Functionality beyond normal rendering See J2K_C and JP2_FF

File type signifiers Explanation of format description terms

Tag Value Note
Filename extension j2c
Extension for raw codestreams; see also JP2_FF
Internet Media Type See related format.  See JP2_FF
Magic numbers See related format.  See JP2_FF
Indicator for profile, level, version, etc. Rsiz=1
The profile indicator is the Rsiz value in the SIZ marker segment.

Notes Explanation of format description terms

General  
History  

Format specifications Explanation of format description terms


Useful references

URLs


Last Updated: Monday, 02-Dec-2013 17:57:51 EST