The emergence of new three-dimensional (3D) multimedia services, such as 3D television and free viewpoint television, created a need for multiple-view multiplexing on 3D displays for more fluidity and scalability. However, coding and transmitting more views is costly. Depth-based formats allow synthesizing the required number of views at a reduced cost compared with video-only formats. Nevertheless, depth videos, alongside texture or color videos, should also be efficiently compressed. A number of depth video coding technologies have been proposed in recent years, both in academic and industrial contexts. These technologies can be mainly categorized into three families. We have tools that exploit some inherent characteristics of depth maps, tools that exploit the correlations with the associated texture, and tools that optimize the depth map coding for the quality of the synthesis. This chapter is intended as a tutorial, illustrating those different depth coding tools, while giving corresponding examples of each. © 2013 by John Wiley & Sons, Ltd.
Depth Video Coding Technologies
Cagnazzo M.;
2013
Abstract
The emergence of new three-dimensional (3D) multimedia services, such as 3D television and free viewpoint television, created a need for multiple-view multiplexing on 3D displays for more fluidity and scalability. However, coding and transmitting more views is costly. Depth-based formats allow synthesizing the required number of views at a reduced cost compared with video-only formats. Nevertheless, depth videos, alongside texture or color videos, should also be efficiently compressed. A number of depth video coding technologies have been proposed in recent years, both in academic and industrial contexts. These technologies can be mainly categorized into three families. We have tools that exploit some inherent characteristics of depth maps, tools that exploit the correlations with the associated texture, and tools that optimize the depth map coding for the quality of the synthesis. This chapter is intended as a tutorial, illustrating those different depth coding tools, while giving corresponding examples of each. © 2013 by John Wiley & Sons, Ltd.Pubblicazioni consigliate
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