With the Winograd algorithm, the complicated eight points DCT and IDCT transform is simplified into simple addition andmultiplication, which according with hardware characteristics of DSP.

• 通过对常用的DCT和IDCT算法的比较，采用了Winograd算法，将复杂的8点DCT和IDCT变换转化为计算量较少的加法和乘法运算，符合DSP硬件的计算特点。