Title :
Subjective and objective testing of video teleconferencing/videophone systems
Author :
Schaphorst, Richard ; Bodson, Dennis
Author_Institution :
Delta Information Systems, Horsham, PA, USA
Abstract :
The CCITT has recently finalized a set of five recommendations which will trigger growth for video teleconference (VTC) and videotelephone (VT) services. It is necessary to develop objective measures of VTC/VT picture quality to insure a specifiable quality of service can be delivered to the user community. Measuring motion distortion is particularly important in VTC/VT systems because some degree of visible motion degradation is usually acceptable for most applications. The authors examine the temporal frequency response measurement technique, present objective test data for operational TV systems, and examine the process of correlating objective test data with subjective test results
Keywords :
teleconferencing; television reception; television standards; videotelephony; CCITT; TV systems; correlation; motion distortion; objective test data; objective testing; picture quality; quality of service; subjective test results; temporal frequency response measurement; video teleconferencing systems; videophone systems; Degradation; Distortion measurement; Frequency response; Measurement techniques; Motion measurement; Particle measurements; Quality of service; System testing; TV; Teleconferencing;
Conference_Titel :
Global Telecommunications Conference, 1991. GLOBECOM '91. 'Countdown to the New Millennium. Featuring a Mini-Theme on: Personal Communications Services
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-87942-697-7
DOI :
10.1109/GLOCOM.1991.188667
