Image Processing Reference
In-Depth Information
Chapter 3
3D Video Representation and Coding
S
´
rgio M.M. Faria, Carl J. Debono, Paulo Nunes,
and Nuno M.M. Rodrigues
Abstract The technologies which allow an immersive user experience in 3D
environments are rapidly evolving and new services have emerged in various fields
of application. Most of these services require the use of 3D video, combined with
appropriate display systems. As a consequence, research and development in 3D
video continues attracting sustained interest.
While stereoscopic viewing is already widely spread, namely in TV and gaming,
new displays and applications, such as FTV (Free viewpoint TV), require the use of
a larger number of views. Hence, the multiview video format was considered,
which uses N views, corresponding to the images captured by N cameras (either
real or virtual), with a controlled spatial arrangement. In order to avoid a linear
escalation of the bitrate, associated with the use of multiple views, video-plus-depth
formats have been proposed. A small number of texture and depth video sequences
are used to synthesize intermediate texture views at a different space position,
through a depth-image-based rendering (DIBR) technique. This technology allows
the use of advanced stereoscopic display processing and to improve support for
high-quality autostereoscopic multiview displays.
In order to provide a true 3D content and fatigue-free 3D visualization,
holoscopic imaging has been introduced as an acquisition and display solution.
However, efficient coding schemes for this particular type of content are needed to
enable proper storage and delivery of the large amount of data involved in these
systems, which is also addressed in this chapter.
S.M.M. Faria (
*
) • N.M.M. Rodrigues
ESTG, Instituto Polit´cnico de Leiria/Instituto de Telecomunica¸˜es, Leiria, Portugal
e-mail:
sergio.faria@co.it.pt
;
nuno.rodrigues@co.it.pt
C.J. Debono
Department of Communications and Computer Engineering, University of Malta, Msida,
Malta
e-mail:
c.debono@ieee.org
P. Nunes
ISCTE, Instituto Universit´rio de Lisboa/Instituto de Telecomunica¸˜es, Lisbon, Portugal
e-mail:
paulo.nunes@lx.it.pt
