Graphics Reference
In-Depth Information
2.3.1
The Advantages and Disadvantages of Colour Plus Depth Map Repres-
entation
The advantages of using colour plus depth map representation of stereoscopic video com-
pared to the video generated with a stereo camera pair can be listed as follows:
• The 3D reproduction can be adjusted to different stereoscopic displays (e.g.
auto- stereoscopic displays) and projection systems as the rendering happens at
the receiver side.
• The2D-to-3Dconversionalgorithmswillgeneratemorecolourplusdepth
stereoscopic video and increase the timely availability of exiting stereoscopic
materials.
• Head-MotionParallax(HMP)couldbesupportedwhichprovidesanadditional
stereoscopic depth cue. This format also limits the viewing angle of the
stereoscopic video camera setup.
• Due to the smoothness characteristics of the real world objects the per-
pixel depth information doesn't have high frequency components. Thus, the
depth sequence can be efficiently compressed with existing compression
standards [24] and will require only a limited space and bandwidth compared
to the requirements of colour image sequence.
• Thediminutionofstereoscopicvideosensationduetophotometricalasymmet-
ries(e.g.intermsofbrightness,contrastorcolour,betweentheleftandtherighteye)
will be eliminated as this representation renders the virtual stereo views using the
samecolourimagesequence.
• Thedepthreproductioncanbeadjustedatthereceiversidebasedonuser
preferences (e.g.age,eyestrain).
• This representation can be effectively used in 3D post production (e.g.
augmentingexternal objectstothesceneusingobjectsegmentationwiththehelp
ofdepthinformation).
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