A new prediction search algorithm for block motion estimation in video coding
IEEE Transactions on Consumer Electronics
A novel four-step search algorithm for fast block motion estimation
IEEE Transactions on Circuits and Systems for Video Technology
A block-based gradient descent search algorithm for block motion estimation in video coding
IEEE Transactions on Circuits and Systems for Video Technology
A simple and efficient search algorithm for block-matching motion estimation
IEEE Transactions on Circuits and Systems for Video Technology
The gray prediction search algorithm for block motion estimation
IEEE Transactions on Circuits and Systems for Video Technology
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Fuzzy logic has been successfully applied to control vague, incomplete, complex, and ill-defined systems. with the help of fuzzy inference, an efficient inter-block/inter-frame fuzzy search (IIFS) algorithm for block motion estimation is proposed. By using the inter-block and inter-frame correlations, IIFS can determine the motion vectors of image blocks quickly and correctly. However, the IIFS algorithm is not suitable for hardware implementation due to very irregular data flow. Hence, in this paper we propose a modified inter-block/inter-frame fuzzy search (MIIFS) algorithm that can be easily realized with VLSI technology. With 0.6 µm CMOS technology, the MIIFS chip has a die size of 4.1 × 4.1 mm2 and 108 K transistors. It can work with a clock rate of 67 MHz, and yield a running speed that can support the MPEG video resolution (720, pixels × 480 lines, 30 frames/s) in real time.