Download 3D Video Technologies: An Overview of Research Trends by Levent Onural PDF

By Levent Onural

This booklet offers a huge assessment of analysis tendencies in 3D video and similar applied sciences. The textual content was once constructed to fulfill the wishes of a nontechnical reader staff who wish to comprehend the problems, matters, technical difficulties and their at present proposed suggestions, and the interactions between assorted parts of the full 3DTV chain. present cutting-edge and study actions are offered, in addition to anticipated examine instructions for the close to, medium, and long-term.

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2(a) and (b). 2(a) A pattern-projection-based video capturing setup. (From T. Bothe, A. Gesierich, W. Li, C. v. Kopylow, N. Köpp, and W. Jüptner, “3D Camera for Scene Capturing and Augmented Reality Applications,” 3DTV-CON 2007, © IEEE 2007. 2(b) The resultant depth image. The color map (side bar) indicates the depth value where blue represents far and yellow represents near. (From T. Bothe, A. Gesierich, W. Li, C. v. Kopylow, N. Köpp, and W. Jüptner, “3D camera for scene capturing and augmented reality applications,” 3DTV-CON 2007, © IEEE 2007.

Interpolation between anchor frames to obtain predicted meshes is another approach, and such methods are already adopted in MPEG-4 (AFX-IC). 5 Multiple-description coding Joint source-channel coding approaches are also applied to 3D video coding. 10 The data source is encoded into separate bit streams, where each such bit stream is independently decodable. As these separate descriptions are received, a single recovery is obtained by fusing the results of each description. Therefore, each received description refines the result.

Other practical problems are associated mainly with the misalignment of the two images on the screen. This includes the mismatch in camera parameters related to lens positioning, structural differences in the lenses, and the direction of the cameras. Additional alignment problems may also arise during the display. Such irregularities result in a seemingly strange and unnatural viewing experience. These irregularities, which do not exist while directly looking at a natural 3D scene, are perceived by the brain as contradictory or unusual stimuli.

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