Fast MPEG-4 Motion Estimation: Processor Based and Flexible VLSI Implementations
Journal of VLSI Signal Processing Systems - Special issue on implementation of MPEG-4 multimedia codecs
Survey on Block Matching Motion Estimation Algorithms and Architectures with New Results
Journal of VLSI Signal Processing Systems
New pixel-decimation patterns for block matching in motion estimation
Image Communication
Error-resilient motion estimation architecture
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
An approach of electronic stabilization based on binary image matching of color weight
CAR'10 Proceedings of the 2nd international Asia conference on Informatics in control, automation and robotics - Volume 2
Fast and accurate global motion compensation
Pattern Recognition
Edge projection-based image registration
KES'05 Proceedings of the 9th international conference on Knowledge-Based Intelligent Information and Engineering Systems - Volume Part II
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Several efficient techniques have previously been proposed to reduce the computational burden of block matching for motion estimation in video coding. The goal is efficient motion estimation with minimal error in the motion-compensated predicted image. We present a block motion estimation scheme which is based on matching of integral projections of motion blocks with those of the search area in the previous frame. Like many other techniques, ours operates in a sequence of decreasing search radii, but it performs an exhaustive search at each level of the hierarchy. The projection method is much less computationally costly than block matching and has a prediction accuracy of competitive quality with both full block matching and other efficient techniques. Our algorithm also takes advantage of the similarity of motion vectors in adjacent blocks in typical imagery by subsampling the motion vector field. It has the added advantage of allowing parallel computation of vertical and horizontal displacements