Naslov
Influence of spatial and temporal activity of upscaled video on its perceived quality

Autori
Vranješ, Mario ; Vranješ, Denis ; Rimac-Drlje, Snježana

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings ELMAR-2014 / Tralić, Dijana ; Muštra, Mario ; Zovko-Cihlar, Branka - Zagreb, 2014, 31-34

ISBN
978-953-184-199-3

Skup
56th International Symposium ELMAR-2014

Mjesto i datum
Zadar, Hrvatska, 10.09.2014. - 12.09.2014

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
scalable video coding; spatial and temporal activity; upscaling; video quality

Sažetak
High network resources costs led to the increasingly usage of scalable video coding in video transmission over the network. Prior to displaying on user device, the transmitted video should be spatial and/or temporal upscaled in order to ensure the acceptable perceived quality level. In this work the relationship between the spatio-temporal activity of upscaled sequence and its perceived quality is examined. The experiments are performed for videos presented on PC and on smartphone, while three different activity measures are analyzed. It is shown that the newly-introduced spatio-temporal activity measure, called SITImean, achieves a high level of correlation with subjective quality scores. Therefore it could be used as an indicator of upscaled video quality, replacing the expensive subjective quality evaluation tests.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA