Evaluation of stereoscopic image quality for mobile devices using interpretation based quality methodology

Abstract

High-quality stereoscopic image content must be viewable in a variety of visual environments, from 3-D theaters to 3-D mobile devices. Stereoscopic effects, however, are affected by screen size, viewing distance, and other parameters. In this study, the authors focus on the stereoscopic image quality experience of viewing 3-D content on a mobile device in order to compare it with that of viewing 3-D content on a large screen. The stereoscopic image quality experience was evaluated using Interpretation Based Quality (IBQ) methodology, which combines existing approaches to image quality evaluation, such as the paired comparison and interview, and assesses the viewer experience using both quantitative and qualitative data. Five stereoscopic images were used in the experiment. The results of the experiment suggest that the discomfort felt while viewing stereoscopic images on a 3-D mobile device arise from not only visual fatigue but also the effects of the smaller screen size. The study also revealed the types of stereoscopic images that are suitable for viewing on 3-D mobile devices.

Descriptive quality of experience for mobile 3D video

“…Our results confirmed that experienced quality goes beyond the apparent features of stimuli [6]. In addition, many of the subcomponents presented replicate some descriptions of previous work showing good reliability of our model [10,16,22,23,28,[32][33]. In contrast, none of the previous work as such has constructed descriptive components for experienced quality of 3D mobile over-the-studies.…”

“…The depth was determined by the detectability of depth and its impressions, being in line with previous work [10,28]. The novelty of our work is towards the structured nature of depth -divided into foreground and background layers.…”

“…Secondly, positive affective experiences of 3D quality highlighted that 3D video on a small display, can offer impression of higher involvement or mediation. These terms have been conventionally associated with 3D presentations on large screens or virtual reality [5,10,11,28]. Thirdly, viewing experience was also influenced by visual discomfort [20], and the excellence of quality was weighted by the knowledge of existing quality.…”

“…Low-level factors in descriptive evaluation of audio and video often offer a description of either the excellence of stimuli or, with the use of antonymous expressions, their perceived impairments. In image and video quality research, low-level factors relate to the sharpness of the stimulus, its colors or brightness [1,10,27,28,32]. This is also valid for 3D videos (blurry, artifacts [33], brilliant [32]).…”

“…In overall, current descriptive studies are rare. They target on 2D systems, explore mainly one medium at the time, or use settings irrelevant for 3D on mobile devices, and finally conclude quality of experience under the constraints of the study-dependent characteristics [1,10,16,22,23,27,28,32].…”