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Title: Psycho-physical limits of interocular blur suppression and its application to asymmetric stereoscopic video delivery
Authors: De Silva, Demuni V.S.X.
Kodikara Arachchi, Hemantha
Ekmekcioglu, Erhan
Fernando, W.A.C.
Dogan, Safak
Kondoz, Ahmet
Savas, Saadet S.
Keywords: Asymmetric coding
Interocular blur suppression
Stereoscopic video delivery
3D video
Issue Date: 2012
Publisher: © IEEE
Citation: DE SILVA, V. ... et al., 2012. Psycho-physical limits of interocular blur suppression and its application to asymmetric stereoscopic video delivery. IN: Proceedings of the 2012 19th IEEE International Packet Video Workshop (PV 2012), Munich, Germany, 10-11 May 2012, pp.184-189.
Abstract: It is well known that when the two eyes are provided with two views of different resolutions the overall perception is dominated by the high resolution view. This property, known as binocular suppression, is effectively used to reduce the bit rate required for stereoscopic video delivery, where one view of the stereo pair is encoded at a much lower quality than the other. There have been significant amount of effort in the recent past to measure the just noticeable level of asymmetry between the two views, where asymmetry is achieved by encoding views at two quantization levels. However, encoding artifacts introduce both blurring and blocking artifacts in to the stereo views, which are perceived differently by the human visual system. Therefore, in this paper, we design a set of psycho-physical experiments to measure the just noticeable level of asymmetric blur at various spatial frequencies, luminance contrasts and orientations. The subjective results suggest that humans could tolerate a significant amount of asymmetry introduced by blur, and the level of tolerance is independent of the spatial frequency or luminance contrast. Furthermore, the results of this paper illustrate that when asymmetry is introduced by unequal quantization, the just noticeable level of asymmetry is driven by the blocking artifacts. In general, stereoscopic asymmetry introduced by way of asymmetric blurring is preferred over asymmetric compression. It is expected that the subjective results of this paper will have important use cases in objective measurement of stereoscopic video quality and asymmetric compression and processing of stereoscopic video.
Description: © 2012 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Sponsor: The work reported in this paper is funded by the 'ROMEO' Project funded by the European Union’s 7th Framework Program.
Version: Accepted for publication
DOI: 10.1109/PV.2012.6229734
URI: https://dspace.lboro.ac.uk/2134/22774
Publisher Link: http://dx.doi.org/10.1109/PV.2012.6229734
ISBN: 1467302996
Appears in Collections:Conference Papers and Presentations (Loughborough University London)

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