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MIME Type Registrations for JPEG 2000 (ISO/IEC 15444) (RFC3745)

IP.com Disclosure Number: IPCOM000026530D
Original Publication Date: 2004-Apr-01
Included in the Prior Art Database: 2004-Apr-06
Document File: 15 page(s) / 31K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

D. Singer: AUTHOR [+3]

Abstract

This document serves to register and document the standard MIME types associated with the ISO/IEC 15444 standards, commonly known as JPEG 2000 (Joint Photographic Experts Group).

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 12% of the total text.

Network Working Group D. Singer

Request for Comments: 3745 Apple Computer

Category: Standards Track R. Clark

Elysium Ltd

D. Lee

Yahoo Inc.

April 2004

MIME Type Registrations for JPEG 2000 (ISO/IEC 15444)

Status of this Memo

This document specifies an Internet standards track protocol for the

Internet community, and requests discussion and suggestions for

improvements. Please refer to the current edition of the "Internet

Official Protocol Standards" (STD 1) for the standardization state

and status of this protocol. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (2004). All Rights Reserved.

Abstract

This document serves to register and document the standard MIME types

associated with the ISO/IEC 15444 standards, commonly known as JPEG

2000 (Joint Photographic Experts Group).

1. Introduction

This document describes the registration of the MIME [MIME1] sub-

types image/jp2, video/mj2, image/jpx, and image/jpm. The image

encoding is defined by [ISO-JPEG2000-1].

The still image file format to which this document refers is defined

in Annex I of [ISO-JPEG2000-1]. Note that a file format is optional

in [ISO-JPEG2000-1], but mandatory for the MIME sub-type. This

document is not related to the definition of the MIME sub-type

image/jpeg, which is partly defined by [ISO-JPEG-1], and partly by

the file format specification defined in [JFIF].

JPEG 2000 is a new standard, intended to create a image coding system

for many types of still images (bi-level, gray-level, color, multi-

component) with different characteristics (natural images,

scientific, medical, remote sensing, imagery, text, rendered

graphics, etc.) allowing different imaging models (client/server,

real-time transmission, image library archival, limited buffer and

Singer, et al. Standards Track [Page 1]

RFC 3745 MIME Type Registrations for JPEG 2000 April 2004

bandwidth resources, etc.) within a unified system. This coding

system is intended to provide low bit-rate operation with rate-

distortion and subjective image quality performance superior to

existing standards, without sacrificing performance at other points

in the rate-distortion spectrum.

This standard is intended to serve still image compression needs that

are currently not served by the current JPEG standards [ISO-JPEG-1],

[ISO-JPEG-2], [ISO-JPEG-3], and [ISO-JPEG-4], and is intended to

compliment, not replace, the current JPEG standards. JPEG 2000 is a

modern wavelet-based codec that is expected to be widely used for

still images. Its use for motion sequences is expected to be similar

to JPEG: in those environments where only a single codec is

required, and JPEG 2000 is available (e.g., digital still cameras

recording short motion sequences) or where frame-by-frame coding is

desired (no inter-frame coding).

There is a standard file format for Motion JPEG 2000 sequences. This

file format permits the carriage of audio in addition to the video.

The format is derived from the ISO Base Media Fi...