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This paper presents an improved fast fractional pel motion estimation algorithm for H.264. First, to skip inefficient fractional pel search, smooth macro-block prediction algorithm is proposed. Then, to further reduce the computation load of H.264 fractional pel motion estimation, an extended diamond pattern search algorithm based on predicted motion vector is proposed. The simulation result shows...
On the basis of studying the mechanism of water bloom, one kind of gray-BP artificial neural network forecasting method is proposed in the paper. The gray theory was used to obtain preliminary forecast of the occurrence trend of water bloom, combined with neural network to implement error compensation for the forecast result. Compared with BP, this method can predict chlorophyll change trend more...
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