One method based on subband quantity adopts combining the scalar and VQ to quantize the wavelet coefficient.The method realizes compression coding by combining SPIHT and Huffman coding.

• 其中基于子带量化的方法采用各子带标量量化、矢量量化相结合的思想对小波系数进行量化,并将零树有损压缩和哈夫曼无损压缩相结合实现压缩编码。