From SD to HD television: effects of H.264 distortions versus display size on quality of experience

International audienceHigh Definition Television (HDTV) is the new broadcasting system designed to take the place of Standard Definition Television (SDTV) at home in the near future. This system requires modification of many features in the broadcasting chain with an overall objective of reaching a noticeably higher quality of experience. Since broadcasters desire a high level of service acceptability, they require efficient measurements of quality of experience. The purpose of this paper is to provide such measurements concerning the noticeable artifacts in H.264 distortions over a range of display sizes and comparing HDTV to SDTV. A subjective characterization of some HDTV quality of experience aspects is proposed and the results are discussed

Studies on the bit rate requirements for a HDTV format with 1920 timestimes 1080 pixel resolution, progressive scanning at 50 Hz frame rate targeting large flat panel displays

This paper considers the potential for an HDTV delivery format with 1920 times 1080 pixels progressive scanning and 50 frames per second in broadcast applications. The paper discusses the difficulties in characterizing the display to be assumed for reception. It elaborates on the required bit rate of the 1080p/50 format when critical content is coded in MPEG-4 H.264 AVC Part 10 and subjectively viewed on a large, flat panel display with 1920 times 1080 pixel resolution. The paper describes the initial subjective quality evaluations that have been made in these conditions. The results of these initial tests suggest that the required bit-rate for a 1080p/50 HDTV signal in emission could be kept equal or lower than that of 2nd generation HDTV formats, to achieve equal or better image qualit

Digital Television: Has the Revolution Stalled?

When digital television technology first hit the scene it garnered great excitement, with its promise of movie theater picture and sound on a fraction of the bandwidth of analog. A plan was implemented to transition from the current analog broadcasting system to a digital system effective December 23, 2006. As we reach the half point of this plan, the furor begins to die as the realities of the difficult change sink in

A novel method for subjective picture quality assessment and further studies of HDTV formats

This is the author's accepted manuscript. The final published article is available from the link below. Copyright @ IEEE 2008.This paper proposes a novel method for the assessment of picture quality, called triple stimulus continuous evaluation scale (TSCES), to allow the direct comparison of different HDTV formats. The method uses an upper picture quality anchor and a lower picture quality anchor with defined impairments. The HDTV format under test is evaluated in a subjective comparison with the upper and lower anchors. The method utilizes three displays in a particular vertical arrangement. In an initial series of tests with the novel method, the HDTV formats 1080p/50,1080i/25, and 720p/50 were compared at various bit-rates and with seven different content types on three identical 1920 times 1080 pixel displays. It was found that the new method provided stable and consistent results. The method was tested with 1080p/50,1080i/25, and 720p/50 HDTV images that had been coded with H.264/AVC High profile. The result of the assessment was that the progressive HDTV formats found higher appreciation by the assessors than the interlaced HDTV format. A system chain proposal is given for future media production and delivery to take advantage of this outcome. Recommendations for future research conclude the paper

High definition systems in Japan

The successful implementation of a strategy to produce high-definition systems within the Japanese economy will favorably affect the fundamental competitiveness of Japan relative to the rest of the world. The development of an infrastructure necessary to support high-definition products and systems in that country involves major commitments of engineering resources, plants and equipment, educational programs and funding. The results of these efforts appear to affect virtually every aspect of the Japanese industrial complex. The results of assessments of the current progress of Japan toward the development of high-definition products and systems are presented. The assessments are based on the findings of a panel of U.S. experts made up of individuals from U.S. academia and industry, and derived from a study of the Japanese literature combined with visits to the primary relevant industrial laboratories and development agencies in Japan. Specific coverage includes an evaluation of progress in R&D for high-definition television (HDTV) displays that are evolving in Japan; high-definition standards and equipment development; Japanese intentions for the use of HDTV; economic evaluation of Japan's public policy initiatives in support of high-definition systems; management analysis of Japan's strategy of leverage with respect to high-definition products and systems

HDTV and DRM: A Need of Further Regulation?

In Germany, the TV broadcasting of the Winter Olympics 2010 marked the official start of high definition television (HDTV). However, the transition from standard to high definition television has been significantly hampered by inconsistent change management. While the large international movie and TV-series producers aim for increased (end-to-end) intellectual property rights protection on the one hand, the satellite and cable-TV network operators in coalition with the private commercial TV-broadcasters strive for advanced business models with increasingly differentiated pricing models on the other hand. The resulting technological requirements lead to rapid changes in technology, which in turn affects consumers and equipment manufacturers We analyze especially the related advancement of the systems and interface standards for encryption and copyright protection which are of central importance in this context, namely the so-called Common Interface (CI) and its enhancement to CI Plus as well as the HD+ satellite platform in order to identify critical issues for media regulators and competition authorities. Our analysis supposes that the German regulatory institutions' capabilities to deal with the issue of regulation against the background of efficient innovation management in a timely manner should be improved. This might also be an opportunity at the level of the European Community to set framework conditions based on principles similar to network neutrality to overcome the current deadlock in Germany and encourage regulatory reform. Especially consumer rights could be protected more effectively in a future regulatory framework for digital content distribution and in order to avoid a tragedy of the anti-commons being an impediment for the rapid transition to HDTV. Overall, our recommendations aim to contribute to achieve the goals of swift digitalization and transition to HDTV. --HDTV,Innovation Management,Tragedy of the Anti-Commons

HDTV in Germany: Lack of Innovation Management Leads to Market Failure

High definition television may now be poised for a breakthrough in Germany. Unfortunately, in the area of private free-TV, broadcasters and network operators are still blocking each other. Market participants hope to leverage encryption and digital rights management as sources of long-term profits. This, however, may come at the expense of television viewers. Despite the start of regular HDTV operations by public broadcasters, only a few consumers are currently in a position to actually receive high definition television. The government should facilitate a rapid resolution to the current standoff and ensure effective monitoring of competition by implementing new standards.HDTV, Innovation Management, Tragedy of the Anti-Commons

Experiences with high definition interactive video conferencing

We review the design and implementation of UltraGrid, a new high definition video conferencing system, and present some experimental results. UltraGrid was the first system to support gigabit rate high definition interactive video conferencing on commodity systems and networks, and we present measurements to illustrate behavior of production networks subject to such real time traffic. We illustrate the benefits of hybrid IP/provisioned optical networks over best effort IP networks for this class of traffic, and motivate the development of congestion control algorithms for interactive conferencing on best effort IP networks

Video-Based Information Systems in Academic Library Media Centers

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