提出一种基于SPIHT算法编码结构的小波树图像的概念,从图像小波变换系数图中提取出各小波树,然后对各小波树、各比特平面层的编码数据独立打包,按重要性依次发送,来提高整个码流的鲁棒性。实验表明,本算法是相当有效的,即使在很高的丢包率情况下,仍能提供较好的解码图像并保留了它的渐进显示特性。 This paper presents a concept of wavelet tree image based on SPIHT algorithm, extracts each wavelet tree from the image wavelet transform coefficient map, then packs the encoded data of each wavelet tree and each bit plane layer independently and sends them in order of importance, To improve the robustness of the entire code stream. Experiments show that this algorithm is quite efficient and can provide better decoded images and retain its progressive display even under high packet loss rate.