Graphics Reference
In-Depth Information
Transmission of 3D content is also a major challenge due to the larger size of the 3D
video content. Therefore, effective mechanisms need to be in place to compress 3D video
content into a more manageable size to be transmitted over band-limited communication
channels. On the other hand, the transmission of immersive video content could be op-
timized based on the perceptual importance of the content. For instance, the different ele-
ments of the 3D video content can be prioritized over communication channels based on
theirerrorsensitivities.Theseprioritizeddatatransmissionschemescanbeeffectivelyused
in optimizing the resource allocation and protection for immersive media content over er-
ror prone communication channels without any degradation to the perceived quality of the
reconstructed 3D replica. The quality of transmitted video suffers from data losses when
transmitted over an error prone channel such as wireless links. This problem is also com-
mon for emerging 3D video communication applications. The effect of transmission errors
on perceived 3D quality is diverse in nature due to the multi-dimensional perceptual at-
tributes associated with 3D viewing. Therefore, efficient error resilient and error conceal-
ment algorithms need to be deployed to overcome the detrimental effects that occur
during transmission. Existing error recovery techniques for 2D video could also be used in
recovering corrupted frames. Moreover, error resilient/concealment techniques which are
tailor-made to particular types of 3D video could be implemented at the application level.
This topic investigates and present sefficient 3D compressionandtransmissiontechnologies
which offerimprovedcompressionefficiency,backwardcompatibility,efficienterrorrecovery
andperceptually prioritized data transmission. Even though 3D video comes in different
scene representations (e.g. Omni-directional video and Multi-view video), this topic fo-
cuses on facilitating stereoscopic video communications,since stereoscopic video has the
potentialtobeeasilyadoptedintotheexistingvideo communicationinfrastructurecompared
toothercomplexrepresentationsof3Dvideo.Thefirstchapter providesthe rationaleand a
brief description of the topic while the final chapter, Chapter 7, summarizes the3Dvideo
concepts covered in this topic and discusses the potential areas for futureresearchinefficient
and robust 3D video communications. The work presented in the other chapters is
summarizedbelow.
Chapter 2 describes stereo vision, the state of the art 3D video technologies for scene
capture and different scene representations of 3D video. Then, existing multimedia com-
pression technologies are described with more specific details about 3D video coding
techniques in Chapter 3. In Chapter 4, the transmission aspects of 3D video and potential
application scenarios are presented. Furthermore, an introduction to error resilience and er-
