本文将DCT变换与SPECK算法相结合,提出了一种基于DCT变换的渐进式图像编码方法.该方法充分利用了DCT变换实现简单的特点,还能充分发挥零树编码的优势实现对图像的高效压缩.输出码流具有嵌入的特性,便于码率控制,具有一定的抗误码能力.同时计算复杂度低,比较适合于低复杂度的图像编码与传输. In this paper, DCT transform and SPECK algorithm are combined to propose a progressive image coding method based on DCT transform, which takes full advantage of the DCT transform to achieve simple features, but also give full play to the advantages of zerotree coding to achieve efficient image Compression.The output stream has the characteristics of embedded, easy to control bit rate, has a certain ability to resist errors, while low computational complexity, more suitable for low complexity image encoding and transmission.