3D Television is a general name for systems that provide viewers with a sense of
depth similar to that we see in real life, because we have two eyes spaced apart
and a highly sophisticated brain. Each eye sees the world from slightly
different angles, and the brain merges these two pictures to create a central
single image that has 'depth'.
The reason for the sense of depth we see has been understood for over 100 years,
and many techniques for recreating for the viewer have been developed.
Fundamentally those developed so far have been relatively simple. Two pictures
or scenes are shot, one for each eye, and each eye is presented with its proper
picture or scene, in one way or another. This is called 'stereoscopy'. Hollywood
has made movies like this, and indeed over the past 50 years there have been
waves when this falls in and out of favour with filmmakers. At the moment (2008)
we are in a wave of favour.
Though the concept of 3D is simple to understand, it is difficult to achieve a
3D system that does not cause 'eye fatigue' after a certain time. Most current
higher resolution systems also need special eyeglasses which can be
inconvenient. Digital alignment of the stereo pair, possible in our new digital
world, can help to reduce eye fatigue, but is not the complete answer.
Apart from eye-fatigue, systems developed so far can also have limitations such
as constrained viewing positions. Multiple viewpoint television systems are
intended to alleviate this.
Stereoscopic systems also allow only limited 'production grammar' etc. We should
not under-estimate the difficulty, or the imagination and creativity required,
to create a near 'ideal' 3D Television system that the public could enjoy in a
relaxed way, and for a long period of time.
Among the countries where 3D research has been made for many years are the
United States, France, UK, Italy, Canada, Japan, Germany, and Russia, though
this is far from a complete list. Russia (Prof Mark Krivocheev) made the
proposal to the ITU-R that the time was ripe for worldwide agreements on 3D
Television, and the ITU-R Study Group 6 has agreed on a 'new Study Question' on
3D Television, which will be submitted for approval by the ITU-R Membership.
The Question calls for contributions on systems that include, but also go beyond
stereoscopy, and include technology that may record what physicists call the
'object wave'. Holograms record in a limited way the 'object wave'. Will there
be a way of broadcasting to record an 'object wave'? This remains to be seen. No
approaches are excluded at this stage.
The 'Question' is essentially a call for proposals for 3D Television. Journals
and individuals are asked to 'spread the word' about this, and to invite
contributions if possible before October 13, 2008. Such contributions are
normally channelled via national administrations, or via the other Members of
the ITU – the so-called Sector Members. A list of all ITU member countries is
If you wish more information about making a submission, and/or to participate in
the work, you are invited to contact ITU-R by email at
This Question is being studied in
ITU-R Study Group 6 (Chaired by Christoph
Working Party 6C (Chaired by David Wood, EBU).
A group within WP 6C (termed a Rapporteur Group) has been established, led by
Vittorio Baroncini (Italy), to take up this matter between now and the next
meeting of SG 6 WP 6C (please consult the
online ITU-R Meeting Schedule).
This is the dawning of the technology of 3D Television, and if we pool our ideas
at this early stage, we stand the best chance of developing a single worldwide
Which proposals will be made, and which may be the subject of agreement, remains
to be seen, but the
Sector has launched an exciting new issue, which may have a
profound impact on television in the years ahead.
Note: This information is extracted from
ITU-R Newsflash (3 June
Recent and upcoming articles on 3DTV:
ITU TELECOM ASIA 2008
Looking at 3D television from every angle
A new Study Question is being examined in the Radiocommunication Sector
ITU News Magazine:
Article: Issue No 09 - November 2008:
The Challenge for the ITU of 'Three Dimensional' Television
by David Wood, EBU
(Chairman ITU-R WP 6C) & Christoph Dosch, IRT (ITU-R Chairman SG 6)
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