3D Video

Abstract

International audience3D video has been considered as the next step in television for some time. The transition from 2D to 3D is frequently seen as comparable to the transition from monochrome to color. The introduction of this new dimension adds new challenges regarding the question of its relates with Quality of Experience (QoE). This chapter mainly focuses on presenting the particular challenges related with stereoscopic 3D video quality. This includes the difficulty to evaluate QoE of 3D video, taking into account all relevant factors. In particular, traditional approaches fail to capture aspects such as the added value in terms of QoE due to 3D depth or quality-issues brought by 3D-specific artifacts and their effect on visual comfort, so that alternative solutions for evaluation are required. As a consequence, the aim of this chapter is to address 3D-specific aspects of visual perception. The employed technology is another aspect of high influence on 3D video QoE. The chapter addresses the different issues related with content creation, transmission and representation, to help the reader understand the differences to a 2D transmission chain, and how technology affects the perception and the construction of the general judgment of 3D video QoE

Analysis of quality of experience in 3D video systems

“…Another option is to downscale one of the views prior to the encoding process, since in case of blurring, the global 3D quality perceived by the viewers use to be the maximum between the quality of both stereo views [176]. Nevertheless, this mechanism also presents some limitations, since it may provoke large differences between both stereo views, hindering the 3D perception by the HVS [112]. …”

“…In particular, different coding configurations of SVC, H.264/AVC and MVC were compared, showing that dynamic rate scaling of only one view provides sufficient rate adaptation capability and better overall compression efficiency compared to scaling both of the views. However, asymmetric coding strategies present some limitations that should be taken into account, since coding configurations causing severe differences between both stereo views should be avoided [112].…”