JPEG2000 utilizes DWT which hassuperior analyzing performance in Time Domain and Frequency Domain to correctthe defect of DCT adopted by JPEG such as Blocking Effect.

• JPEG2000利用时频域局部化分析性能良好的离散小波变换(DWT)的优点改进了原JPEG标准中离散余弦变换(DCT)编码所固有的许多不足之处,如方块效应等。