RFC 1314 (rfc1314) - Page 1 of 23
A File Format for the Exchange of Images in the Internet
Alternative Format: Original Text Document
Network Working Group A. Katz
Request for Comments: 1314 D. Cohen
ISI
April 1992
A File Format for the Exchange of Images in the Internet
Status of This Memo
This document specifies an IAB standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "IAB
Official Protocol Standards" for the standardization state and status
of this protocol. Distribution of this memo is unlimited.
Abstract
This document defines a standard file format for the exchange of
fax-like black and white images within the Internet. It is a product
of the Network Fax Working Group of the Internet Engineering Task
Force (IETF).
The standard is:
** The file format should be TIFF-B with multi-page files
supported. Images should be encoded as one TIFF strip
per page.
** Images should be compressed using MMR when possible. Images
may also be MH or MR compressed or uncompressed. If MH or MR
compression is used, scan lines should be "byte-aligned".
** For maximum interoperability, image resolutions should
either be 600, 400, or 300 dpi; or else be one of the
standard Group 3 fax resolutions (98 or 196 dpi
vertically and 204 dpi horizontally).
Note that this specification is self contained and an implementation
should be possible without recourse to the TIFF references, and that
only the specific TIFF documents cited are relevant to this
specification. Updates to the TIFF documents do not change this
specification.
Experimentation with this file format specified here is encouraged.
Katz & Cohen