A preliminary set of possible performance requirements
for a 3DTV broadcasting service
This Annex is a collation of candidate performance requirements for a 3DTV broadcasting service that have been identified in contributions submitted to WP 6C since October 2008. As far as possible, each is presented in the form in which it appeared in the original contribution, and the source contribution is indicated. They are listed in order of the contributions in which they are mentioned.
It should not be assumed that this list is comprehensive, or that each would necessarily be applicable to all possible types of 3DTV services.
a) The goal of the 3DTV viewing experience should be to create the illusion of a real environment, which can be watched for an indefinite period of time by an audience with normal visual acuity (Document 6C/128).
b) The quality of the 3DTV service should be established by two principal parameters: sensation of reality and comfortableness or ease of viewing (Document 6C/128).
c) In the case of a 3DTV emission system that is intended to allow for the compatible reception of conventional SDTV, EDTV or HDTV digital signals, no perceptible degradation of the conventional television presentation should be caused by the additional signal coding required to convey the extra information needed for 3DTV (Document 6C/128).
d) The viewing experience provided by a new 3DTV service should represent a major improvement as compared to the experience provided by HDTV broadcasting at its best quality level (Document 6C/155).
e) A new 3DTV service should be implemented in a way to match the viewing habits that will likely be typical of television audiences at the time when the service will be introduced (Document 6C/155).
f) A single set of image and sound specifications should be recommended for the new 3DTV service, unless it is essential to choose more than one set of specifications in order to reflect unavoidable regional constraints (Document 6C/298).
g) It would be desirable, albeit not imperative, to preserve a certain degree of backward compatibility of the new 3DTV service with existing consumer receivers (Document 6C/298).
h) The image and sound system parameters of each new television broadcasting application should be optimized on the basis of the performance requirements specific to the 3DTV service, even if this requires departing from technical solutions adopted for other applications (Document 6C/298).
j) Specifications should be recommended for a new 3DTV broadcasting service after it has been demonstrated through life-size simulations and tests that it offers new attractive features, and that broadcasting audiences that have been exposed to it, have appreciated its features and have expressed their interest to gain access to it, purchasing the necessary consumer equipment (Document 6C/298).
k) The issue of visual fatigue and other possible health hazards related to extended viewing of 3DTV programmes based on presentation methods currently available or proposed, should be resolved prior to developing Recommendations on technical specifications for a future 3DTV broadcasting service (Document 6C/299).