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Bücher Englische Bücher Wissen & Bildung Naturwissenschaft, Medizin, Informatik, Technik Informatik & EDV Datenkommunikation & Netzwerke Efficient Coding Tools for 360° Video
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Efficient Coding Tools for 360° Video
Johannes Sauer (Broschiert, Englisch)
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Beschreibung
360° video is a relatively new video format. The whole scene around a single point is recorded. During playback the user can choose and change his viewing direction. Interest in 360° video and cameras started growing in mid 2015 and it was of particular interest in the development of the standard Versatile Video Coding (VVC), which was approved in late August 2020. This work was performed in… parallel to the development of VVC and focused on the development of coding tools specific to 360° video.
The first developed tool allows the introduction of uncoded areas into the pictures of a coded video. In this work it is shown how uncoded areas alone can be applied in order too efficiently encode 360° video represented by cube faces in a non-compact packing, outperforming coding in the compact packing. Further, the uncoded areas are used as a building block of the other tools developed in this thesis.
The main contribution of this work is a method of improved motion compensation for 360° video in cubemap representation, called geometry padding. It works by correcting geometrical distortions which occur at cube face boundaries. Geometry padding improves the prediction signal used by motion compensation and thus increases the coding performance. It also mitigates otherwise clearly visible artifacts.
360° video also poses problems for the conventional loop filters used in video coding. In particular, application of the traditional deblocking filter (DBF) at face boundaries in 360° video in cubemap representation can lead to the creation of additional artifacts. This issue was addressed with the development of a modified DBF. Dieses Produkt haben wir gerade leider nicht auf Lager.
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Bis zu 50 % günstiger als neu
Der Umwelt zuliebe
Technische Daten
Erscheinungsdatum
07.01.2022
Sprache
Englisch
EAN
9783844083750
Herausgeber
Shaker
Serien- oder Bandtitel
Aachen Series on Multimedia and Communications Engineering
Sonderedition
Nein
Autor
Johannes Sauer
Seitenanzahl
156
Auflage
1
Einbandart
Broschiert
-.-
★★★★★
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