An Efficient Mode Decision Algorithm for H.264/AVC Encoding Optimization
IEEE Transactions on Multimedia
16x16 macroblock partition size prediction for H.264 P slices
IEEE Transactions on Consumer Electronics
Overview of the H.264/AVC video coding standard
IEEE Transactions on Circuits and Systems for Video Technology
Rate-constrained coder control and comparison of video coding standards
IEEE Transactions on Circuits and Systems for Video Technology
Fast mode decision algorithm for intraprediction in H.264/AVC video coding
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 Coding Mode Selection With Rate-Distortion Optimization for MPEG-4 Part-10 AVC/H.264
IEEE Transactions on Circuits and Systems for Video Technology
Fast inter-mode decision based on rate-distortion cost characteristics
PCM'10 Proceedings of the Advances in multimedia information processing, and 11th Pacific Rim conference on Multimedia: Part II
Fast mode decision algorithm for H.264/AVC using edge characteristics of residue images
Proceedings of the Seventh Indian Conference on Computer Vision, Graphics and Image Processing
Hierarchical B-picture mode decision in H.264/SVC
Journal of Visual Communication and Image Representation
Adaptive rate-distortion prediction for multiple reference selection and inter-mode decision
PCM'12 Proceedings of the 13th Pacific-Rim conference on Advances in Multimedia Information Processing
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The latest video coding standard H.264/AVC significantly outperforms previous standards in terms of coding efficiency. H.264/AVC adopts variable block sizes ranging from 4 × 4 to 16 × 16 in inter frame coding, and achieves significant gain in coding efficiency compared to coding a macroblock (MB) using regular block size. However, this new feature causes extremely high computation complexity when rate-distortion optimization (RDO) is performed using the scheme of full mode decision. This paper presents an efficient intermode decision algorithm based on motion homogeneity evaluated on a normalized motion vector (MV) field, which is generated using MVs from motion estimation on the block size of 4 × 4. Three directional motion homogeneity measures derived from the normalized MV field are exploited to determine a subset of candidate intermodes for each MB, and unnecessary RDO calculations on other intermodes can be skipped. Experimental results demonstrate that our algorithm can reduce the entire encoding time about 40% on average, without any noticeable loss of coding efficiency.