Implementation system search method based on hierarchical motion estimation and

When the system for implementing the present disclosure, the method of the current frame and the reference frame in accordance with a downsampling ratio for downsampling layer hierarchical motion estimation search method based on motion estimation and, provided the candidate motion vector in steps of two integer pixel unit vectors after downsampling. The system comprises a reference luminance pixel cache module, the module hierarchical multiplexing PE array; PE array control module register data update operation. The solution proposed by the present invention, only one 4: 1 down-sampling, a 16x16 block of original image layer becomes 8x8 block, the block matching obvious feature; also provided downsampling layer 2 search step is to reduce the amount of calculation to meet real-time video encoder.