Pregled bibliografske jedinice broj: 3574
Objective and Subjective Evaluations of Picture Quality in Digital Video Systems
Objective and Subjective Evaluations of Picture Quality in Digital Video Systems // Proceedings Icomt"96 / Fazekas, Kalman (ur.).
Budimpešta: Scientific Socitey for Telecommunications, 1996. str. 145-150 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
CROSBI ID: 3574 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Objective and Subjective Evaluations of Picture Quality in Digital Video Systems
Autori
Bauer, Sonja ; Zovko-Cihlar, Branka ; Grgić, Mislav
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Izvornik
Proceedings Icomt"96
/ Fazekas, Kalman - Budimpešta : Scientific Socitey for Telecommunications, 1996, 145-150
Skup
International Conference on Multimedia Technology and Digital Telecommunication Services
Mjesto i datum
Budimpešta, Mađarska, 28.10.1996. - 30.10.1996
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
video compression algorithms; MPEG-1; reconstruction error; subjective evaluations; test sequence
Sažetak
A general discussion of video quality must take into consideration a variety of factors including spatial and temporal resolution and color reproducibility. In this paper the extent to which the quality of video signal is degraded by process of compression and decompression is considered. Significant compression is achievable only by lossy compression algorithms which do not permit the exact recovery of the original image. The difference between the original and decompressed image is given as reconstruction error which is the standard objective measure of picture quality. Objective measurements quantify the influence of spatial resolution and there is not possible to infer the effect of variations in temporal domain (temporal resolution). Therefore, objective measurements have limited effectiveness in predicting the quality of compressed images as seen by the observes. There is no general method known for this type of evaluation except subjective evaluation. In this paper we describe the measurement of picture quality using subjective evaluation procedure. MPEG-1 coding algorithms for video compression was applied to four difference type of video sequences with different level of movement at several bit rates to produce the test material for subjective assessment of picture quality. The results are evaluated using the mean opinion score as the measure of picture quality.
Izvorni jezik
Engleski
Znanstvena područja
Elektrotehnika
