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	    README FILE FOR THE T.24 DIGITIZED IMAGE SET
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TITLE
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 ITU-T T.24 (06/1998) - Standardized digitized image set
 (CD-04 edition)

Test images have played an important role throughout the development of Group 3
and Group 4 facsimile. This digitized test chart set has been prepared with the
goal of providing a standard set of images to facsimile experimenters. The set
includes images that have been used over the years plus new images that are
applicable for gray scale and color. The standard set of images will provide a
consistent baseline for further work; for example, results of compression
algorithm experiments and image quality tests can be compared by a broad range
of users, knowing that the input image data is identical

This digitized test chart set is an integral part of ITU-T Rec. T.24 and is
published with it. The two CD-ROMs include a set of digitized images with
different resolutions. A detailed description is given in T.24 for each test
chart.

COPYRIGHT AND INTELLECTUAL PROPERTY
-----------------------------------

In order to preserve and protect its rights, the International Telecommunication
Union (ITU) fully retains all titles and rights in this software and does not
sell any rights related thereto; it grants, however, the right to use the
software by means of a licence not implying in any way any sale, renting or
otherwise gain financial profit from making available the original software or
any copy thereof.

By the present licence, ITU grants users of the software a non-exclusive right
to freely reproduce the information contained therein, so that it may be used
for intended purposes only. Use of the software constitutes the agreement by
users of the terms and conditions of the present notice.

The present notice must be included in any copy of the software or the
information contained therein.

ITU CONTACTS
------------

For distribution of update software, please contact:
Sales Department
ITU
Place des Nations
CH-1211 Geneve 20
SUISSE
email: sales@itu.int

For reporting problems, please contact TSB helpdesk service at:
TSB Helpdesk service
ITU
Place des Nations
CH-1211 Geneve 20
SUISSE
fax: +41 22 730 5853
email: tsbedh@itu.int

USAGE INSTRUCTIONS:
-------------------

The images can be viewed with any available viewer complying with the TIFF
specification.

Among others, there are the following shareware: VuePrint from Hamrick Software
at http://www.hamrick.com and Paint Shop Pro at http://www.jasc.com.

Located in the root directory of the first CD-ROM, you'll find the TIFF
Specification Revision 6.0 in pdf format:

   Tiff6.pdf           TIFF Specification Revision 6.0

The following copyright statement is included in the TIFF Specification Revision 6.0:

(c) 1986-1988, 1992 Aldus Corporation. Permission to copy without fee all
or part of this material is granted provided that the copies are not made or
distributed for direct commercial advantage and the Aldus copyright notice appears.
If the majority of the document is copied or redistributed, it must be distributed
verbatim, without repagination or reformatting. To copy otherwise requires specific
permission from the Aldus Corporation.

CD-ROM CONTENTS:
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The first CD-ROM contains the charts which were already included in 1994 version.
The second CD-ROM contains the supplementary test charts introduced in 1998 edition.

The files are organized as follows:

CD-ROM 1:
  - IMAGE1      : A directory containing 1st CD-ROM test charts
 imgspec1.rtf   : Image specification for CD-ROM1 in rtf format
 imgspec1.txt   : Image specification for CD-ROM1 in txt format
 readme.txt     : This file
 tiff6.pdf      : TIFF specification revision 6.0 

CD-ROM 2:
  - IMAGE2      : A directory containing 2nd CD-ROM test charts
 imgspec2.rtf   : Image specification for CD-ROM2 in rtf format
 imgspec2.txt   : Image specification for CD-ROM2 in txt format
 readme.txt     : This file