The added value of stereoscopy is an important factor for stereoscopic product development and content production.
Previous studies have shown that 'image quality' does not encompass the added value of stereoscopy, and thus the
attributes naturalness and viewing experience have been used to evaluate stereoscopic content. The objective of this
study was to explore what the added value of stereoscopy may consist of and what are the content properties that
contribute to the magnitude of the added value. The hypothesis was that interestingness is a significant component of the
added value. A subjective study was conducted where the participants evaluated three attributes of the stimuli in the
consumer photography domain: viewing experience, naturalness of depth and interestingness. In addition to the no-reference
direct scaling method a novel method, the recalled attention map, was introduced and used to study attention in
stereoscopic images. In the second part of our study, we use eye tracking to compare the salient regions in monoscopic
and stereoscopic conditions. We conclude from the subjective results that viewing experience and naturalness of depth
do not cover the entire added value of stereoscopy, and that interestingness brings a new dimension into the added value
research. The eye tracking data analysis revealed that the fixation maps are more consistent between participants in
stereoscopic viewing than in monoscopic viewing and from this we conclude that stereoscopic imagery is more effective
in directing the viewer's attention.
|