Title :
Subjective Assessment of the Quality-Oriented Adaptive Scheme
Author :
Muntean, Gabriel-Miro ; Perry, Philip ; Murphy, Liam
Author_Institution :
Sch. of Electron. Eng., Dublin City Univ., Ireland
Abstract :
The Quality-Oriented Adaptation Scheme (QOAS) supports the distribution of high quality multimedia services to a large number of simultaneous customers via given broadband IP infrastructure. This paper presents subjective testing results that augment previously reported objective performance assessment. Clips representing different classes of multimedia sequences in terms of motion content and types were selected and streamed using a QOAS-based prototype system. Congested delivery network conditions were emulated and the effects of the consequent QOAS-driven adaptations were subjectively assessed by end-users. The test subjects have also graded their perceived quality when using a nonadaptive streaming approach. The QOAS-related results were much higher than those obtained for a nonadaptive approach, being above the “good” perceptual level for all multimedia clips and in all tested delivery conditions.
Keywords :
IP networks; broadband networks; multimedia communication; quality of service; video streaming; QOAS-based prototype system; broadband IP infrastructure; end-user; feedback control; motion content; multimedia clip; multimedia service; nonadaptive streaming approach; quality perception; quality-oriented adaptation scheme; subjective testing; Consumer electronics; Costs; Feedback control; Multimedia systems; Prototypes; Quality of service; Streaming media; System testing; Technological innovation; Telecommunication traffic; Adaptive multimedia streaming; end-user perceived quality; feedback control; subjective testing;
Journal_Title :
Broadcasting, IEEE Transactions on
DOI :
10.1109/TBC.2005.846187
