Fast variable-size block motion estimation using merging procedure with an adaptive threshold
ICME '03 Proceedings of the 2003 International Conference on Multimedia and Expo - Volume 1
An improved variable-size block-matching algorithm
Multimedia Tools and Applications
Quadtree-structured variable-size block-matching motion estimation with minimal error
IEEE Transactions on Circuits and Systems for Video Technology
Fast intermode decision in H.264/AVC video coding
IEEE Transactions on Circuits and Systems for Video Technology
Fast mode selection for H.264 video coding standard based on motion region classification
Multimedia Tools and Applications
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The H.264 video compression standard supports seven variable block sizes ranging from 4驴脳驴4 to 16驴脳驴16 for one Macro Block (MB) with 16驴脳驴16 size to conduct motion estimation (ME) and compensation. This new feature achieves significant coding gain at the cost of huge computation complexity. Dozens of fast mode decision algorithms with fast block size selection have been proposed to reduce complexity. In this paper, we propose an improved fast block size selection method based on MB movement characteristic. The Motion Vector (MV) and block residual are employed to analyze the movement characteristic of one MB novelly. Then the movement characteristic is used to decide whether and how to merge or split the MB for encoding. Experimental results show that this method speeds up mode decision procedure dramatically with negligible compression performance degradation.