Towards standardized 3DTV QoE assessment: Cross-lab study on display technology and viewing environment parameters

Marcus Barkowsky (1) , Jing Li (1) , Taehwan Han (2) , Sungwook Youn (2) , Jiheon Ok (2) , Chulhee Lee (2) , Christer Hedberg (3) , Indirajith Vijai Ananth (3) , Kun Wang (4) , Kjell Brunnström (3) , Patrick Le Callet (1)

1 irccyn-ivc
2 Yonsei University
3 Acreo AB
4 Mid Sweden University

Subjective assessment of Quality of Experience in stereoscopic 3D requires new guidelines for the environmental setup as existing standards such as ITU-R BT.500 may no longer be appropriate. A first step is to perform cross-lab experiments in different viewing conditions on the same video sequences. Three international labs performed Absolute Category Rating studies on a freely available video database containing degradations that are mainly related to video quality degradations. Different conditions have been used in the labs: Passive polarized displays, active shutter displays, differences in viewing distance, the number of parallel viewers, and the voting device. Implicit variations were introduced due to the three different languages in Sweden, South Korea, and France. Although the obtained Mean Opinion Scores are comparable, slight differences occur in function of the video degradations and the viewing distance. An analysis on the statistical differences obtained between the MOS of the video sequences revealed that obtaining an equivalent number of differences may require more observers in some viewing conditions. It was also seen that the alignment of the meaning of the attributes used in Absolute Category Rating in different languages may be beneficial. Statistical analysis was performed showing influence of the viewing distance on votes and MOS results.

Mots clés: Subjective assessment; Viewing environment; Stereoscopic Displays; 3D Quality of Experience; Cross-Lab Validation; Standardization

Domaines: Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]

Marcus Barkowsky, Jing Li, Taehwan Han, Sungwook Youn, Jiheon Ok, et al.. Towards standardized 3DTV QoE assessment: Cross-lab study on display technology and viewing environment parameters. SPIE Electronic Imaging, Feb 2013, San franscisco, United States. pp.864809-864809, ⟨10.1117/12.2004050⟩. ⟨hal-00789054⟩