用 FPGA实现了二维离散余弦变换和逆变换，结构设计采用行列分解法，乘法器采用移位求和的方法实现，并且采用流水线结构设计，提高处理核的性能-Using FPGA to achieve the two-dimensional discrete cosine transform and inverse transform, the structural design of the use of the ranks of decomposition, the sum of multipliers using displacement method, and the structural design of the use of pipelining to improve the performance of the disposal of nuclear