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Conference Paper
The Memory Bandwidth Efficient CTU-Aligned DV Derivation in 3D-HEVC
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- Authors
- Gun Bang, Yung Su Heo, Min Sung Lee, Kyung Yong Kim, Gwang Soon Lee, Namho Hur, Gwang Hoon Park
- Issue Date
- 2014-05
- Citation
- International Conference on 3D Systems and Applications (3DSA) 2014, pp.1-3
- Language
- English
- Type
- Conference Paper
- Abstract
- In 3D-HEVC, disparity vector is used for deriving candidate of motion parameters for a current block in a dependent view. The vertical component of the derived disparity vector mostly closes to zero, since the current test sequences are rectified in JCT-3V. However, the disparity vector with very large vertical component could come up, since there is no restriction for the vertical motion search range for the inter-view prediction. It increases the required memory-access bandwidth on the decoder side. Therefore, in this paper, the coding tree unit aligned disparity vector for a temporal inter-view motion vector candidate is proposed to reduce the memory-access bandwidth. Simulation results show that the proposed method performs negligible coding loss compared to HTM version 7 while the memory bandwidth to access the co-located motion data is dramatically reduced up to 97%.
- KSP Keywords
- 3D-HEVC, Bandwidth efficient, Co-located, Current test, Dependent View, Memory Access, Memory bandwidth, Motion Data, Motion Vector(MV), Motion parameters, Search Range