二维DCT变换，采用查找表的方法实现算法，分别通过列变换，，再通过行变换，通过加法器乘法器和流水线技术得出更快的结果！ -2D DCT algorithm using look-up table method, respectively, by column transform, and then transform through the line faster results obtained by the adder multipliers and pipelining techniq