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Initialization, limitation, and predictive coding of the depth and texture quadtree in 3D-HEVC
- Publication Year :
- 2014
- Publisher :
- Institute of Electrical and Electronics Engineers Inc., 2014.
-
Abstract
- The 3D video extension of High Efficiency Video Coding (3D-HEVC) exploits texture-depth redundancies in 3D videos using intercomponent coding tools. It also inherits the same quadtree coding structure as HEVC for both components. The current software implementation of 3D-HEVC includes encoder shortcuts that speed up the quadtree construction process, but those are always accompanied by coding losses. Furthermore, since the texture and its associated depth represent the same scene, at the same time instant and view point, their quadtrees are closely linked. In this paper, an intercomponent tool is proposed in which this link is exploited to save both runtime and bits through a joint coding of the quadtrees. If depth is coded before the texture, the texture quadtree is initialized from the coded depth quadtree. Otherwise, the depth quadtree is limited to the coded texture quadtree. A 31% encoder runtime saving, a -0.3% gain for coded and synthesized views and a -1.8% gain for coded views are reported for the second method.
- Subjects :
- Predictive coding
Speedup
business.industry
Computer science
depth quadtree limitation
ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION
Initialization
Pattern recognition
Data_CODINGANDINFORMATIONTHEORY
3D Video Coding
inter-component prediction
predictive coding
texture quadtree initialization
Coding tree unit
Data_FILES
Media Technology
Quadtree
Computer vision
Artificial intelligence
Electrical and Electronic Engineering
business
Encoder
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....1cb6c36b71f151627f9caf26cef8e0b3