Me too.
------------------------------------------
Elliott Bradshaw
Director, Software Engineering
Oak Technology Imaging Group
781 638-7534
don@lexmark.co
m To: "BIGELOW,JIM (HP-Boise,ex1)"
Sent by: <jim.bigelow@hp.com>
owner-xp@pwg.o cc: PWG XHTML-Print <xp@pwg.org>
rg Subject: Re: XP> Request for discussion of the
interactions of EXIF orientation ma rkers and a
CSS image orientation property
01/07/2003
09:14 AM
Jim:
I agree to:
1) Make the processing of EXIF markers optional.
2) State that any (future?) XHTML or CSS markup affecting image orientation
shall take precedence over the EXIF markers
**********************************************
Don Wright don@lexmark.com
Chair, IEEE SA Standards Board
Member, IEEE-ISTO Board of Directors
f.wright@ieee.org / f.wright@computer.org
Director, Alliances & Standards
Lexmark International
740 New Circle Rd
Lexington, Ky 40550
859-825-4808 (phone) 603-963-8352 (fax)
**********************************************
"BIGELOW,JIM (HP-Boise,ex1)" <jim.bigelow@hp.com>@pwg.org on 01/06/2003
09:01:28 PM
Sent by: owner-xp@pwg.org
To: PWG XHTML-Print <xp@pwg.org>
cc:
Subject: XP> Request for discussion of the interactions of EXIF
orientation ma rkers and a CSS image orientation property
Hello,
The XHTML-Print specification states how an enhanced layout printer should
handle EXIF markers in JPEG images
(http://www.pwg.org/xhtml-print/HTML-Version/XHTML-Print.html#a_jpeg.3).
A JPEG decoder for an XHTML-Print implementation which
supports the Enhanced Layout Extension shall decode the
TIFF IFDs embedded in the EXIF APP1 and APP2 markers, as
described in Section 2.6.4 of [JEIDA]. The following IFDs
shall be fully supported (i.e. they shall not be ignored).
Tag Name: Image Orientation
Field Name: Orientation
Description: Sets image orientation in 90-degree increments,
and enables transposition.
This requirement was discussed at the April and June 2002 meetings. See
http://www.pwg.org/xhtml-print/minutes/Minutes-June-24-2002.html and
http://www.pwg.org/xhtml-print/minutes/Minutes-April-17-2002.txt The June
meeting decide to make the processing of EXIF markers optional. Therefore,
text above should be changed to say "may decode" from "shall decode" and
"shall be fully supported (i.e., shall not be ignored)." becomes "may be
supported."
A JPEG decoder for an XHTML-Print implementation which
supports the Enhanced Layout Extension may decode the
TIFF IFDs embedded in the EXIF APP1 and APP2 markers, as
described in Section 2.6.4 of [JEIDA]. The following IFDs
may be supported.
Tag Name: Image Orientation
Field Name: Orientation
Description: Sets image orientation in 90-degree increments,
and enables transposition.
Melinda Grant posed a question in the June meeting about optional support
for EXIF markers and a future CSS property that specified image orientation
and how the two would interact. The CSS working group of the W3C is
currently considering an image orientation property, so this concern could
come up in one to two years.
I propose that a CSS property, if present, take precedence over the image's
EXIF orientation markers.
Comments?
Jim Bigelow,
Editor: XHTML-Print & CSS Print Profile
IEEE, Printer Working Group
http://www.pwg.org/xhtml-print
Hewlett-Packard
208-396-2068
jim.bigelow@hp.com
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