Coleen T. Jones, Ned Crow, Stephen Wolf, and Arthur A. Webster

Abstract: Presents detailed intra-laboratory (within laboratory) and inter-laboratory (between laboratories) analysis of variance (ANOVA) results for the T1A1 subjective video experiment that contained 625 mean opinion scores (25 test scenes passed through 25 different video transmission systems that ranged in bit rate from 64 kb/sec to 45 Mb/sec). The ANOVA results for the subjective test data were obtained by applying the techniques in ANSI contribution T1A1.5/94-128. A correlation analysis is given of the objective parameters presented in ANSI contributions T1A1.5/93-153, T1A1.5/93-152 (corrections given in T1A1.5/94-110), and T1A1.5/94-102. In addition to the detailed ANOVA results, plots are presented which compare the subjective data from the different laboratories.

Keywords: digital; performance; video; quality; objective; subjective; correlation; compression; conferencing; ANOVA; results; systems

Disclaimer: Certain commercial equipment, components, and software may be identified in this report to specify adequately the technical aspects of the reported results. In no case does such identification imply recommendation or endorsement by the National Telecommunications and Information Administration, nor does it imply that the equipment or software identified is necessarily the best available for the particular application or uses.

For questions or information on this or any other NTIA scientific publication, contact the ITS Publications Office at ITSinfo@ntia.gov or 303-497-3572.

Back to Search Results