EVALUATION OF DEPTH COMPRESSION AND VIEW SYNTHESIS DISTORTIONS IN MULTIVIEW-VIDEO-PLUS-DEPTH CODING SYSTEMS

被引:0
作者
El-Yamany, Noha A. [1 ,2 ]
Ugur, Kemal [3 ]
Hannuksela, Miska M. [3 ]
Gabbouj, Moncef [2 ]
机构
[1] Tampere Univ Technol, Dept Signal Proc, Tampere, Finland
[2] Southern Methodist Univ, Dept Elect Engn, Dallas, TX USA
[3] Nokia Res Ctr, Tampere, Finland
来源
2010 3DTV-CONFERENCE: THE TRUE VISION - CAPTURE, TRANSMISSION AND DISPLAY OF 3D VIDEO (3DTV-CON 2010) | 2010年
关键词
Depth map compression; multi-view video coding; video plus depth; view synthesis;
D O I
暂无
中图分类号
TB8 [摄影技术];
学科分类号
0804 ;
摘要
Several quality evaluation studies have been performed for video-plus-depth coding systems. In these studies, however, the distortions in the synthesized views have been quantified in experimental setups where both the texture and depth videos are compressed. Nevertheless, there are several factors that affect the quality of the synthesized view. Incorporating more than one source of distortion in the study could be misleading; one source of distortion could mask (or be masked by) the effect of other sources of distortion. In this paper, we conduct a quality evaluation study that aims to assess the distortions introduced by the view synthesis procedure and depth map compression in multiview-video-plus-depth coding systems. We report important findings that many of the existing studies have overlooked, yet are essential to the reliability of quality evaluation. In particular, we show that the view synthesis reference software yields high distortions that mask those due to depth map compression, when the distortion is measured by average luma peak signal-to-noise ratio. In addition, we show what quality metric to use in order to reliably quantify the effect of depth map compression on view synthesis quality. Experimental results that support these findings are provided for both synthetic and real multiview-video-plus-depth sequences.
引用
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页数:4
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