A Pruning Based Fast Rate Control Algorithm for MPEG Coding
ICCIMA '99 Proceedings of the 3rd International Conference on Computational Intelligence and Multimedia Applications
A comparison of block-matching algorithms mapped to systolic-array implementation
IEEE Transactions on Circuits and Systems for Video Technology
Journal of Visual Communication and Image Representation
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A novel block matching algorithm for motion estimation in a video frame sequence, well suited for a high performance FPGA implementation is presented in this paper. The algorithm is up to 40% faster when compared to one of the fastest existing algorithms, viz., one-at-a-time step search algorithm without compromising either in the image quality or in the compression effected. The speed advantage is preserved even in the event of a sudden scene change in a video sequence. The proposed algorithm is also capable of dynamically detecting the direction of motion of image blocks. The FPGA implementation of the algorithm is capable of processing color pictures of sizes up to 1024x768 pixels at the real time video rate of 25 frames/second and conforms to MPEG-2 standards.