A dual quad-tree based variable block-size coding method

Authors:
Yunfei Wang;Xunan Mao;Yun He
Affiliations:
State Key Laboratory on Microwave and Digital Communications, Tsinghua National Laboratory for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijin ...;State Key Laboratory on Microwave and Digital Communications, Tsinghua National Laboratory for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijin ...;State Key Laboratory on Microwave and Digital Communications, Tsinghua National Laboratory for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijin ...
Venue:
Journal of Visual Communication and Image Representation
Year:
2010

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Abstract

Recent video coding standards with hybrid structure adopt variable block-size processing techniques including variable block-size motion estimation and compensation, variable block-size intra prediction, and variable block-size transform. This paper gives analysis on the variable block-size techniques based on software simulations, and variable block-size transform is specially studied. As a result of the analysis, a generalized dual quad-tree based variable block-size coding (DQTC) structure is proposed. This structure also shows good flexibility and expansibility, in which the prediction block-size set and the transform block-size set can be configured according to requirements and the implementation complexity constraints. Simulation results show a considerable performance improvement for the proposed structure with low implementation complexity while the coding block-size sets and parameters are optimized.