ISO 12639:2004/Amd 1:2007

SLOVENSKI STANDARD
SIST ISO 12639:2004/Dodatek 1:2010
01-maj-2010
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Graphic technology - Prepress digital data exchange - Tag image file format for image
technology (TIFF/IT) - AMENDMENT 1: Use of JBIG2-Amd2 compression in TIFF/IT
Technologie graphique — Échange de données numériques de préimpression — Format
de fichier d'image d'étiquette pour la technologie d'image - AMENDEMENT 1: Utilisation
de la compression JBIG2-Amd2 dans le format de fichier d'image d'étiquette pour la
technologie d'image
Ta slovenski standard je istoveten z: ISO 12639:2004/Amd 1:2007
ICS:
35.240.30 Uporabniške rešitve IT v IT applications in information,
informatiki, dokumentiranju in documentation and
založništvu publishing
37.100.99 'UXJLVWDQGDUGLY]YH]L] Other standards related to
JUDILþQRWHKQRORJLMR graphic technology
SIST ISO 12639:2004/Dodatek 1:2010 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ISO 12639:2004/Dodatek 1:2010

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SIST ISO 12639:2004/Dodatek 1:2010

INTERNATIONAL ISO
STANDARD 12639
Second edition
2004-05-15
AMENDMENT 1
2007-03-01
Graphic technology — Prepress digital
data exchange — Tag image file format
for image technology (TIFF/IT)
AMENDMENT 1: Use of JBIG2-Amd2
compression in TIFF/IT
Technologie graphique — Échange de données numériques de
préimpression — Format de fichier d'image d'étiquette pour la
technologie d'image
AMENDEMENT 1: Utilisation de la compression JBIG2-Amd2 dans le
format de fichier d'image d'étiquette pour la technologie d'image




Reference number
ISO 12639:2004/Amd.1:2007(E)
©
ISO 2007

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SIST ISO 12639:2004/Dodatek 1:2010
ISO 12639:2004/Amd.1:2007(E)
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ii © ISO 2007 – All rights reserved

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SIST ISO 12639:2004/Dodatek 1:2010
ISO 12639:2004/Amd.1:2007(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
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International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
Amendment 1 to ISO 12639:2004 was prepared by Technical Committee ISO/TC 130, Graphic technology.

© ISO 2007 – All rights reserved iii

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SIST ISO 12639:2004/Dodatek 1:2010

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SIST ISO 12639:2004/Dodatek 1:2010
ISO 12639:2004/Amd.1:2007(E)

Graphic technology — Prepress digital data exchange — Tag
image file format for image technology (TIFF/IT)
AMENDMENT 1:Use of JBIG2-Amd2 compression in TIFF/IT
Page 13, 7.2.6, Data format
At the end of the unnumbered list, add the following additional bullet:
"— the JBIG2-Amd2-encoding scheme for the BP and SD formats (value 34715), see Annex L".

Page 14, Table 1, fourth column (“Compression”), row beginning with “Binary picture (BP)”
Replace “1,4 or 8” with “1, 4, 8 or 34715”.

Page 14, Table 1, fourth column (“Compression”), row beginning with “Screened data (SD)”
Replace “1,4 or 8” with “1, 4, 8 or 34715”.

Page 73
Add the following Annex L before the Bibliography.
© ISO 2007 – All rights reserved 1

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SIST ISO 12639:2004/Dodatek 1:2010
ISO 12639:2004/Amd.1:2007(E)
Annex L
(informative)

Incorporating JBIG2-Amd2 compressed data into TIFF/IT
L.1 Incorporating JBIG2-Amd2 compressed data into TIFF/IT
This annex defines JBIG2-Amd2 compressed data that may be included in TIFF/IT-BP and TIFF/IT-SD
images or files. The images described in this annex belong to TIFF/IT-BP or TIFF/IT-SD image types.
JBIG2-Amd2 compression may be used in TIFF/IT-BP and TIFF/IT-SD.
JBIG2-Amd2 compression shall not be used in TIFF/IT-BP/P1, -BP/P2, -SD/P1 or -SD/P2. JBIG2-Amd2
compression shall not be used in TIFF/IT-CT, -LW, -HC, -MP or -BL.
Unless other specifications are indicated in this annex, the compliant file, reader and writer for TIFF/IT-BP or
TIFF/IT-SD with JBIG2-Amd2 compressed data shall accept the conforming level for TIFF/IT-BP or TIFF/IT-
SD respectively.
In specifications of TIFF/IT-BP and TIFF/IT-SD for the JBIG2-Amd2 compressed data, classification marks
and values of TIFF/IT fields basically conform to those of TIFF/IT-BP or TIFF/IT-SD images or files (see
Tables 12 and 14).
L.2 Requirement for incorporating JBIG2-Amd2 compressed data into TIFF/IT-BP or
TIFF/IT-SD
L.2.1 General
JBIG2-Amd2 compressed data in this annex are based on Amendment 2 to JBIG2 (JBIG2-Amd2), described
in ISO/IEC 14492:2001/Amd.2:2003, which is a common text with ITU-T Rec. T.88/Amd.2. JBIG2-Amd2 may
be based on sequential coding of the image pixels using arithmetic coding, which is specified in Annex E of
ISO/IEC 14492:2001, which is a common text with ITU-T Rec. T.88, and a template to determine the coding
state. This technique was used in ISO/IEC 11544 (JBIG), which is a common text with ITU-T Rec. T.82.
JBIG2-Amd2 provides effective lossless compression for bi-level images, like the halftones used in printing.
A TIFF/IT-BP or TIFF/IT-SD image or file with the JBIG2-Amd2 compressed data shall have Compression
field with the value of 34715.
259  Compression SHORT  = 34715
TIFF/IT JBIG2-Amd2 compression procedure may be applied to TIFF/IT-BP and TIFF/IT-SD images. TIFF/IT
JBIG2-Amd2 compression procedure shall not be applied to TIFF/IT images with the other compressed data.
NOTE JBIG2-Amd2 (ISO/IEC 14492:2001/Amd.2:2003, which is a common text with ITU-T Rec. T.88/Amd.2) was
developed by ISO/IEC JTC 1/SC 29/WG 1 and published in 2003.
2 © ISO 2007 – All rights reserved

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SIST ISO 12639:2004/Dodatek 1:2010
ISO 12639:2004/Amd.1:2007(E)
L.2.2 Usage of JBIG2-Amd2 compressed codestream for TIFF/IT-BP
In a TIFF/IT-BP file with the JBIG2-Amd2 compressed data, the TIFF/IT tag fields that are related to the
JBIG2-Amd2 compressed data strip are StripOffsets and StripByteCounts (see Table 12). The counts of
StripOffsets and StripByteCounts shall be 1. Other tag fields are not related to the descriptions of compressed
strip format, and specify information related to the original (or uncompressed) TIFF/IT file format or image
types to be reconstructed from the compressed image.
A JBIG2-Amd2 compressed codestream for TIFF/IT-BP in this annex has the following restrictions.
NOTE The term “Codestream” in this annex corresponds to “compressed strip data”.
a) A JBIG2-Amd2 compressed codestream contains four types of segments; profiles segment, page-
information segment, immediate-lossless-generic-region segment, and end-of-page segment.
b) A JBIG2-Amd2 compressed codestream consists of at least five segments; a profiles segment, a page-
information segment, at least two immediate-lossless-generic-region segments, and an end-of-page
segment as shown in Figure L.1.
c) The referred
...