Survey on Block Matching Motion Estimation Algorithms and Architectures with New Results
Journal of VLSI Signal Processing Systems
A framework for fast mode decision in the H264 video coding standard
Digital Signal Processing
An improved variable-size block-matching algorithm
Multimedia Tools and Applications
An efficient mode decision for low bit rate coding IN H.264/AVC
IMSA'07 IASTED European Conference on Proceedings of the IASTED European Conference: internet and multimedia systems and applications
Fast block mode decision algorithm in H.264/AVC video coding
Journal of Visual Communication and Image Representation
An improved block size selection method based on macroblock movement characteristic
Multimedia Tools and Applications
An efficient mode decision for low bit rate coding in H.264/AVC
EurolMSA '07 Proceedings of the Third IASTED European Conference on Internet and Multimedia Systems and Applications
Fast intra mode SKIP detection algorithm based on adaptive thresholding in H.264/AVC video coding
SPPRA '08 Proceedings of the Fifth IASTED International Conference on Signal Processing, Pattern Recognition and Applications
Moving vehicles detection based on adaptive motion histogram
Digital Signal Processing
Multiple block-size search algorithm for fast block motion estimation
ICICS'09 Proceedings of the 7th international conference on Information, communications and signal processing
MIJ2K Optimization using evolutionary multiobjective optimization algorithms
Expert Systems with Applications: An International Journal
ISVC'06 Proceedings of the Second international conference on Advances in Visual Computing - Volume Part II
A hierarchical framework for fast macroblock prediction mode decision in h.264
PCM'06 Proceedings of the 7th Pacific Rim conference on Advances in Multimedia Information Processing
Reducing spatial resolution for MPEG-2 to H.264/AVC transcoding
PCM'05 Proceedings of the 6th Pacific-Rim conference on Advances in Multimedia Information Processing - Volume Part II
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A merging procedure for variable-size block motion estimation is proposed to reduce the computation for block-size decision. A smaller block-size is initially used for motion estimation. An adaptive threshold, which depends on the information obtained from the motion estimation, quantization parameter, and rate distortion cost function is used to determine if the motion vectors of the neighboring blocks should be merged or not. We simulate the proposed merging procedure using an H.264 video encoder to determine if 16x16, 16x8, 8x16, or 8x8 blocksize should be used for each macroblock. Based on the simulations, performance of the proposed method is close to that of H.264 JM2.1 when 16x16, 16x8, 8x16 and 8x8 block modes are enabled and the exhaustive search method is used to determine the block-sizes. Computational complexity can be significantly reduced by the proposed algorithm since it only performs the motion search for one block-size.