A new algorithm of zerotree and fractal image is presented by selecting the best wavelet packet basis and different encoding methods were used, i. e. wavelet zerotree and fractal image.

• 在分析小波包变换、零树编码和分形编码的特点的基础上，通过选择最佳小波包基，对不同子带分别采取零树编码和分形预测编码等措施，提出了一种基于小波包变换的零树分形图像编码算法。