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About the US TAG and the IS&T IT Committees
The US TAG is responsible for providing technical experts and determining the US position on ISO/TC42 standards. With Scott Foshee of Adobe Systems, Inc. as Chairperson, the US TAG to ISO/TC42 is organized, by areas of focus, into IT Committees. The members of each IT Committee can participate in and vote on standards activities in their respective IT Committee’s technology area. The IT Committees are:
IT2 - Image Evaluation
Chairperson: Philip Wychorski, Orion Standards LLC
IT2 develops standards pertaining to the quantitative evaluation of conventional and
digital photographic prints, such as density and resolution measurements. It also
develops standards for measuring the response of imaging materials and devices,
such as the sensitivity of photographic film to light, the spectral power distribution
of exposure lamps, and the conditions for viewing images.
IT2 has 5 sub-groups focused on the following areas:
- IT2-28 Densitometry, led by Philip Wychorski (Orion Standards LLC)
- IT2-31 X-ray Film Image Evaluation, led by Betsy Guffey (Carestream Health, Inc.)
- IT2-36 Image Structure, led by Philip Wychorski (Orion Standards LLC)
- IT2-39 Light Sources and Lenses, led by Philip Wychorski (Orion Standards LLC)
- IT2-45 Sensitometry of Photographic Films and Papers, lead by Jack Holm (individual expert)
IT2 members form the US opinion on ISO standards developed by ISO/TC42/WG3: Sensitometry, Image Measurement and Viewing, and many members are also US experts on that working group. IT2 members may represent users, governmental agencies, other standards organizations, and companies that manufacture photographic film, paper and plates, as well as other imaging media. IT2 holds a committee meeting once per calendar year. Qualified organizations, companies, or individuals willing to actively participate in standards development related to image evaluation are encouraged to join IT2.
IT9 - Image Permanence
Chairperson: Ann McCarthy, Lexmark International, Inc.
The scope of the IT9 Committee is the development of standards and recommended
practices for physical properties, permanence behavior and the effect of environmental
factors on imaging materials. Imaging materials include photographic film and paper,
digital print media, image transfer materials, magnetic recording materials,
electro-optical materials, and other materials. IT9’s scope includes a variety of digital
output materials, such as inkjet prints on paper and other substrates.
The primary focus of IT9 is the formation of the US opinion on ISO standards developed by ISO/TC42/WG5: Physical Properties and Image Permanence of Photographic Materials. WG5 develops the ISO 189XX series of standards on physical properties and permanence of imaging materials, as defined in IT9, above. There are currently more than 40 standards, either published or in development. Most IT9 members also serve as US experts on ISO/TC 42/WG5. IT9 meetings are held, as needed, to agree on US voting positions. Qualified organizations, companies, or individuals willing to actively participate in standards development related to image permanence are encouraged to join IT9.
IT10 - Digital Photography
Chairperson: Ken Parulski, Eastman Kodak Company
IT10 develops standards related to digital photography, including mobile imaging.
The scope of IT10 includes specifying image formats, device interfaces, and storage media.
IT10 also works to develop standardized measurement methods for digital cameras,
camera phones, photo scanners, and other digital capture devices and systems.
By serving as US experts on ISO/TC42/WG18 and on several joint working groups administered by ISO/TC42, IT10 has supported the development of more than 20 ISO standards. These ISO standards cover the following topics:
- Digital image formats and image transfer protocols
- Digital camera ISO speed, resolution, OECF, and noise measurements
- Print and film scanner resolution and dynamic range measurements
- Extended color encodings
- Psychophysical methods for estimating image quality
- Terminology
To speed the development and publication of critical standards of interest in the US, IT10 has also developed ANSI-approved standards using a fast-track process. These efforts included the creation of PTP (Picture Transfer Protocol), which was later adopted as ISO 15740, the international standard for communicating with digital cameras and other digital photography devices.
IT10 members form the US opinion on ISO standards developed by ISO/TC42/WG18, and most members also serve as US experts on that working group. IT10 meetings are normally held twice per year. ISO/TC42/WG18 also typically meets twice per year, between IT10 meetings. Qualified organizations, companies, or individuals willing to actively participate in standards development related to digital photography are encouraged to join IT10.
